How is it possible that four haploid cells are produced from one diploid cell
Answers
Answer:
Meiosis I and II results in two cell divisions.
Explanation:
Related Questions
Consider these versions of The War of the Worlds. Excerpt 1, from H. G. Wells's novel The War of the Worlds: The common round the sand pits was dotted with people, standing like myself in a half-fascinated terror, staring at these creatures, or rather at the heaped gravel at the edge of the pit in which they lay. And then, with a renewed horror, I saw a round, black object bobbing up and down on the edge of the pit. It was the head of the shopman who had fallen in, but showing as a little black object against the hot western sun. Now he got his shoulder and knee up, and again he seemed to slip back until only his head was visible. Suddenly he vanished, and I could have fancied a faint shriek had reached me. Excerpt 2, from Howard E. Koch's script for Orson Welles's radio adaptation: PHILLIPS: Ladies and gentlemen, you've just heard Mr. Wilmuth, owner of the farm where this thing has fallen. I wish I could convey the atmosphere . . . the background of this . . . fantastic scene. Hundreds of cars are parked in a field in back of us. Police are trying to rope off the roadway leading to the farm. But it's no use. They're breaking right through. Cars' headlights throw an enormous spot on the pit where the object's half buried. Some of the more daring souls are now venturing near the edge. Their silhouettes stand out against the metal sheen.
Which statement best describes the similarity between these versions?
A)Both versions impart an urgent tone through a resident’s words.
B)Both versions impart setting details through colorful description.
C)Both versions explain the background of a scientific phenomenon.
D)Both versions use characterization to show the locals' intelligence.
Answers
The similarity between the two versions is that both versions impart setting details through colorful description.
What is a setting of an event?The setting of an event or place refers to the overall features or prevailing conditions of a place in which a particular event occurs.
In the two versions of the events occurring, colorful description is used to explain the situation on ground. For example, the first version talks of half-fascinated terror, renewed horror, and a faint shriek which are all colorful words. The second version uses the descriptions; fantastic scene, enormous spot and daring souls.
Therefore, the similarity between the two versions is that both versions impart setting details through colorful description.
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A red flower is mixed with a white flower and the offspring come out all pink what type of dominance is this?
A. Incomplete
B. Codominance
Answers
Answer: Incomplete dominance
Explanation: In incomplete dominance, there will be a mixture of the two alleles. In codominance, both alleles are expressed in the phenotype. In this case, an example of codominance would be the flower being half white and half red.
9. Bogs, marshes, and swamps are examples of what type of ecosystem?
A.
desert
B.
wetland
C.
intertidal zones
D.
coniferous forest
Answers
Answer:
wetland
Explanation:
Hope this helps!
What are the different 4 hardwood groups according to their classification?
Answers
Answer:
BAMBOO. While it's not exactly hardwood, most people consider it as such. ...
MAPLE. Maple flooring is one of the most popular hardwood flooring choices. ...
ROSEWOOD. ...
WALNUT. ...
CHERRY. ...
BRAZILIAN CHERRY. ...
PINE. ...
HICKORY.
Explanation:
BAMBOO. While it's not exactly hardwood, most people consider it as such. ...
MAPLE. Maple flooring is one of the most popular hardwood flooring choices. ...
ROSEWOOD. ...
WALNUT. ...
CHERRY. ...
BRAZILIAN CHERRY. ...
PINE. ...
HICKORY.
Eric is observing various types of eggs and trying to correlate them with the mode of fertilization. One of the eggs has a calcareous shell with a large amount of yolk. Another is wet with a moderate amount of yolk and with many coatings of jelly above it. What could be the mode of fertilization of the animals to which they belong?
Answers
The mode of fertilization of the animals to which they belong is: Animals with calcareous eggs with a large amount of yolk have internal fertilizationAnimals with wet eggs with a moderate amount of yolk and with many coatings of jelly above it have external fertilization.
The animals with calcareous eggs with a large amount of yolk have internal fertilization while the animals with wet eggs with a moderate amount of yolk and with many coatings of jelly above it have external fertilization.
The fertilization mode is a significant determinant of the type of egg and its surrounding environment. As such, fertilization modes can be distinguished based on whether they occur inside or outside the female's body.
The fertilization mode can be determined by the type of egg and its surrounding environment. Fertilization occurs inside the female's body in internal fertilization, while it occurs outside the female's body in external fertilization.
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which of the following statements about major components of blood is correct? plasma makes up approximately 55 percent of whole blood and includes cells and cell fragments. plasma makes up approximately 45 percent of whole blood and includes cells and cell fragments. formed elements make up approximately 55 percent of whole blood and proteins and small solutes. formed elements make up approximately 45 percent of whole blood and includes cells and cell fragments.
Answers
The correct statement about major component of blood is A. Plasma makes up approximately 55 percent of whole blood and includes cells and cell fragments.
Blood is a unique fluid that is critical for the survival of all living organisms. Blood is a specialized tissue that performs a variety of essential functions. It is made up of three major components: plasma, formed elements, and cell fragments. Plasma is the liquid portion of blood, which makes up about 55% of the total blood volume.
Plasma is a complex mixture of water, salts, gases, enzymes, and other substances. It transports nutrients, hormones, and waste products to and from various parts of the body. Formed elements and cell fragments make up the remaining 45% of the blood volume. Formed elements include red blood cells, white blood cells, and platelets. Therefore, Option A is correct
The question was incomplete. find the full content below:
which of the following statements about major components of blood is correct?
A. plasma makes up approximately 55 percent of whole blood and includes cells and cell fragments
B. plasma makes up approximately 45 percent of whole blood and includes cells and cell fragments
C. formed elements make up approximately 55 percent of whole blood and proteins and small solutes
D. formed elements make up approximately 45 percent of whole blood and includes cells and cell fragments.
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cientists tried inserting the jellyfish gene that codes for luminescence into bacteria. Not all bacteria where transformed. Which bacteria were transformed?
a Only the bacteria that glow in the dark were transformed.
b Both glowing and non-glowing bacteria were transformed.
c Only the bacteria that can now survive in the sea were transformed.
d Only the bacteria that do not glow in the dark were transformed.
Answers
Answer:
a. Only the bacteria that glow in the dark were transformed.
Explanation:
If the bacteria can now glow in the dark, they have been transformed. If not, they have not been transformed.
Question 1 of 10
A plant is able to survive in a temperate forest biome, but cannot survive in a
desert biome. Which is most likely a characteristic of this plant?
A. Able to stop water from evaporating
B. Needs sunlight year-round to survive
C. Able to live through changes in temperature
D. Does not need very much water to survive
SUBMIT
(HELPPPPPP !!!!!! N HURRRYYY)
Answers
Answer:
C Able to live through changes in temperature
Explanation:
What is meiosis step by step?
Answers
Explanation:
interphase ll, DNA not replicated.
chromosome remain visible.
prophase ll, chromosome move towards the poles.
chromosome thickens.
metaphase ll, chromosome lines up in the middle.
anaphase ll, chromotids move apart.
telophase, nuclear appears .
spindle fibres dissapears.
formation of 4 daughter cells.
According to cell biology, the division of duplicated chromosomes into two new nuclei occurs during the mitotic phase of the cell cycle.
What are the stages of Mitosis?Meiosis is the type of cell division that results in four daughter cells, each with half the number of chromosomes of the parent cell.
Mitosis, the process of cell division, creates genetically identical cells with a constant number of chromosomes. Thus, equational division is another name for mitosis.
Meiosis is broken down into two stages. Several phases are split into each step.
Menopause I:
First phase
I. Metaphase
I. Anaphase
I. Telophase
I. Cytokinesis
2. Meiosis
Telophase II, Prophase II, Metaphase II, Anaphase II, and Cytokinesis II.
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Which would have a bigger effect on an organism, an error during transcription or a point mutation?
Answers
Answer: Point mutation would have a bigger effect on an organism.
Explanation:
o
What does Darwin's controversial book, On the Origin of Species by Means
of Natural Selection, illustrate?
A
the importance of variations in organisms
B
that traits affect how likely an organism is to reproduce
С
how species evolve by adapting to their environment
D
all the above
Answers
Answer:
D
all the above
Explanation:
Hope this will help
Answer:
D
all the above
Explanation:
Correct
16. A farm has a bluish-gray color Andalusian fowl, but doesn't want anymore of that color of bird. Which color of bird
would be best for the farmer to breed the bluish-gray Andalusian fowl with in order to have the lowest chance of
having offspring that are bluish-gray? Why?
Answers
Based on the Punnett square of the crosses shown, the color of bird that would be best for the farmer to breed the bluish-gray Andalusian fowl with in order to have the lowest chance of having offspring that are bluish-gray is Black fowl because they have a 50% chance, unlike white color that has a 100% chance.
What is cross-breeding?Cross-breeding is the process of breeding two organisms of different varieties, breeds, or species, in order to create offspring that possess desirable traits from both parents.
In the given crosses shown, crossing the bluish-gray Andalusian fowl with Black fowl have a 50% chance, whereas crossing the bluish-gray Andalusian fowl with white fowl color has a 100% chance.
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Can someone plss help me with these questions!!
Answers
Answer:
(1) the steam from the hot water will make the balloon rise up
(2) When hot and cold are in thermal contact, they exchange heat energy until they reach thermal equilibrium
Explanation:
As a result of endocrine disorder, the client with polycystic ovary syndrome will like exhibit which of the following clinical manifestations? Select all that apply.
A)
Male pattern baldness
B)
Metabolic syndrome with insulin resistance
C)
Irregular menstrual cycles
D)
Infections of the cervix
E)
BP 100/70s, low normal
Answers
The client with polycystic ovary syndrome (PCOS) is likely to exhibit the following clinical manifestations:
A) Male pattern baldness
B) Metabolic syndrome with insulin resistance
C) Irregular menstrual cycles
Polycystic ovary syndrome (PCOS) is an endocrine disorder that affects women of reproductive age. It is characterized by hormonal imbalances that can lead to various symptoms and health complications. One common manifestation of PCOS is male pattern baldness, which can occur due to elevated levels of androgens (male hormones). PCOS is also associated with metabolic syndrome, a cluster of conditions including insulin resistance, obesity, high blood pressure, and dyslipidemia.
Insulin resistance is a hallmark of PCOS and contributes to the development of metabolic abnormalities. Irregular menstrual cycles are another common feature of PCOS, resulting from disruptions in the normal hormonal patterns. Infections of the cervix and blood pressure within the range of 100/70s are not typically directly associated with PCOS.
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the specific part of the thalamus that receives feedback projections from primary visual cortex is .
Answers
The specific part of the thalamus that receives feedback projections from the primary visual cortex is the lateral geniculate nucleus (LGN).
The thalamus is the most prominent part of the diencephalon, located in the brainstem, beneath the cerebral cortex, and above the midbrain. The thalamus is a major relay and processing center for sensory information that is transmitted to the cerebral cortex. The sensory information from the peripheral nervous system is received by the thalamus and relayed to the appropriate areas of the brain for interpretation.
The lateral geniculate nucleus (LGN) is the specific part of the thalamus that receives feedback projections from the primary visual cortex. The LGN is a small structure in the thalamus that processes visual information from the retina and sends it to the primary visual cortex for further processing.
The primary visual cortex is a part of the cerebral cortex that processes visual information from the eyes. It is located in the occipital lobe of the brain, at the back of the head. The primary visual cortex receives input from the LGN and processes it to produce a visual perception of the environment.
Therefore, the LGN is the specific part of the thalamus that receives feedback projections from the primary visual cortex.
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A large population of rock pocket mice with various fur colors lives in
a designated area. Soon after a volcanic eruption, the number of mice
with dark-colored fur in the population increased.
Which statement BEST describes the reason for the change in
fur color?
A Mutations for dark-colored fur were passed down within the
somatic cells, resulting in more mice with dark-colored fur.
B Mice with light-colored fur selected mutations that allowed their
fur to become darker.
C The fitness of mice with dark-colored fur increased, so they
became more abundant.
D Mice with light-colored fur began feeding in the daytime to
stimulate the release of a pigment for dark-colored fur.
Answers
The best statement to describe the reason for the change in fur color in the population of rock pocket mice after a volcanic eruption is: The fitness of mice with dark-colored fur increased, so they became more abundant.
The correct answer is option C.
The change in the population's fur color is likely due to natural selection acting on the mice with different fur colors. Prior to the volcanic eruption, the population consisted of rock pocket mice with various fur colors, including both light-colored and dark-colored individuals. After the eruption, there was an increase in the number of mice with dark-colored fur.
In this scenario, the volcanic eruption might have caused changes in the environment, such as altering the color of the rocks or vegetation in the area. As a result, mice with dark-colored fur had an advantage over mice with light-colored fur in terms of camouflage and predator avoidance. The dark-colored mice were better able to blend in with their surroundings, making them less visible to predators and increasing their chances of survival. Consequently, the fitness of mice with dark-colored fur increased, as they had a higher likelihood of surviving and reproducing.
Over time, through natural selection, the population experienced a shift in the frequency of fur colors, with more mice having dark-colored fur. This change in fur color occurred because mice with dark-colored fur had a higher fitness and were more successful at passing on their genes to subsequent generations.
Therefore, the correct answer is option C which states: The fitness of mice with dark-colored fur increased, so they became more abundant.
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Both parents have Bi blood type. what blood types could their children have
Answers
Answer:
If both parents have the same blood type then their children would also have the same just like if they have the same eye or hair color
Answer:
B or O
Explanation:
Two parents with B blood type can be either B or O blood type. One parent with A and another with B can produce a child with A, B, AB or O blood types. If one parent has A and another has AB, they can either produce a child with A, B or AB blood types.
evidence of a role for nlgns in synapse formation was initially established by experiments demonstrating that overexpression of nlgn in either neuronal or non-neuronal cells is sufficient to trigger co-cultured neurons to extend presynaptic processes onto nlgn-overexpressing cells
Answers
The main answer is that the evidence of a role for NLGNs in synapse formation was initially established by experiments demonstrating that overexpression of NLGN in either neuronal or non-neuronal cells is sufficient to trigger co-cultured neurons to extend presynaptic processes onto NLGN-overexpressing cells.
Neuroligins (NLGNs) are cell adhesion molecules that are part of the neurexin family of proteins. These proteins are essential for synapse formation and maintenance. NLGNs bind to neurexins, which are expressed on the surface of presynaptic neurons, to establish a synaptic junction between the pre- and postsynaptic neurons. Evidence for the role of NLGNs in synapse formation was initially established by experiments demonstrating that overexpression of NLGN in either neuronal or non-neuronal cells is sufficient to trigger co-cultured neurons to extend presynaptic processes onto NLGN-overexpressing cells.
This suggested that NLGNs play a crucial role in synapse formation by initiating the formation of presynaptic processes and thus the formation of synaptic junctions. In addition, NLGN knockout mice have been shown to exhibit deficits in synaptic function, providing further evidence of the importance of these proteins in the development and maintenance of synapses.
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Members of the phylum echinodermata move using a(n) ____________ ____________ system and include the sea stars, brittle stars, sea urchins, and sea cucumbers.
Answers
Members of the phylum Echinodermata move using a unique water vascular system.
This phylum comprises various marine organisms such as sea stars, brittle stars, sea urchins, and sea cucumbers. The water vascular system plays a crucial role in locomotion, feeding, and respiration for these organisms. It consists of a network of fluid-filled canals connected to tube feet, which are small, movable appendages present on the body surface.
By regulating the water pressure within the system, echinoderms can extend or retract their tube feet, enabling them to move, cling to surfaces, and capture prey. The water vascular system is a defining characteristic of echinoderms and allows them to adapt to a variety of marine environments.
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Students who use memorization strategies such as chunking and clustering can remember much more than those who do not.What is the Independent Variable and why?What is the dependent Variable and why?
Answers
Dependent variable is a variable that changes because of the manipulation of the independent variable. The dependent variable in the scenario is the memorization capacity of the students since it is being manipulated by the strategies such as chunking and clustering to produce an outcome.
Independent variable is a variable that does not depend on another variable. It can stand alone and it does not change. The independent variable in the scenario is the memorization strategies such as chunking and clustering. Application of such strategies does not affect the status of the strategies.
usually, a river ________ at its source compared to farther downstream.
Answers
There can be many answers for these king of question for eg:- Its wider
WILL GIVE BRAINIEST
Explain the roles the nucleus, Endoplasmic Reticulum, Ribosome, and Golgi Body plays in protein synthesis
must explain all roles to get brainiest
Answers
Answer:
I really don’t know to be honest
Explanation:
Part A: which would best fill the chart for “B”
A-69 chromosomes
B-0 chromosomes
C-23 Chromosomes
D-46 chromosome
Part B Which of these best describes why your answer for question #1 must occur everytime?
A-Mitosis forms sperm and eggs which must have half then number of chromosomes
as the original.
B-In order to maintain genetic continuity, it is important that mitosis create new cells
with the same number of chromosomes as the original cell.
C-Deletion of chromosomes through mitosis is essential to maintain a species in the
future.
D-Mitosis triples the number of chromosomes to give new cells a better chance of
survival.
Chart:
Answers
Part A: The best option to fill the chart for "B" would be "0 chromosomes."
Why is it important that mitosis create new cells with the same number of chromosomes as the original cell?
Part B: The answer for question #1 must be "B-In order to maintain genetic continuity, Because mitosis is the process of cell division in which a single cell divides into two identical daughter cells, it is critical that mitosis create new cells with the same number of chromosomes as the original cell.
Each daughter cell receives an equal number of chromosomes as the parent cell, which ensures that the genetic information is maintained and conserved in the newly formed cells. If the number of chromosomes were to change, it could result in genetic abnormalities, which could lead to a variety of issues, including developmental disorders, diseases, and potentially even death.
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Which of the following is an example of a nonspecific immune response? I. White blood cells that invade the area of a cut in the skin II. An injury triggers mast cells to release histamine, causing inflammation III. Killer T-cells destroy pathogens by recognizing proteins on cell surfaces.
Answers
Nonspecific is the innate immune response that is present since birth. White blood cells and mast cells are examples of non-specific immunity.
What is a nonspecific immune response?The non-specific immune response is the immunity present in the child from his/her birth and is a generalized response that employs white blood cells and mast cells for conferring the pathogens.
It is innate immunity that protects from the invasion of pathogens and provides the first line of defence by forming barriers.
It includes the invasion of the white blood cells in the area of any cut or injury or the release of the histamine from the mast cells in an injured area for the inflammation pathway.
Therefore, the statement I about white cells and II about mast cells are examples of the non-specific immune response.
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what are the 3 categories of nutrients?
Answers
Answer:
I thought there were only two; macronutrients and micronutrients
Explanation:
fats, carbohydrates and proteins
all the offspring of a cross between a curly haired and a straight haired person have offspring with wavy hair. this pattern of color expression is most likely to be an example of
Answers
All the offspring of a cross between a curly haired and a straight-haired person have offspring with wavy hair. This pattern of colour expression is most likely to be an example of Incomplete dominance.
What exactly is a partial dominance?
A cross in which each genetically distinct parental contribution results in progeny with an intermediate phenotype causes incomplete dominance. Semi-dominance and partial dominance are other names for incomplete dominance. Mendel talked about dominance, but not full dominance.
What is inheritance with incomplete dominance?
About the transcript Only one allele from the genotype is visible in the phenotype in full dominance. When codominance exists, the phenotype exhibits both alleles present in the genotype. A mixture of the genotype's alleles can be visible in the phenotype in incomplete dominance.
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Single-cell recording studies have indicated that the _______ may be especially important in the control of internally guided motor sequences, whereas the _______ may be especially important in the control of externally guided motor sequences.Select one:a. supplementary motor cortex ; premotor cortexb. premotor cortex ; supplementary motor cortexc. basal ganglia ; cerebellumd. cerebellum ; basal ganglia
Answers
Single-cell recording studies have indicated that the supplementary motor cortex may be especially important in the control of internally guided motor sequences, whereas the premotor cortex may be especially important in the control of externally guided motor sequences. The correct answer is a. supplementary motor cortex ; premotor cortex.
The supplementary motor cortex is involved in the planning and execution of complex motor sequences that are guided by internal cues or memories.
The premotor cortex, on the other hand, is involved in the planning and execution of motor sequences that are guided by external cues or stimuli. These two areas of the brain work together to control our movements and allow us to perform complex motor tasks.
The frontal lobe's SMA and premotor cortex play a role in the organisation and beginning of voluntary motor motions. The SMA and premotor cortex are active in conjunction with the basal ganglia during beat-based timing and beat perception.
Therefore The correct answer is a. supplementary motor cortex ; premotor cortex.
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100 Points!!! need biology help please i am desperate and will give 100 here is 2 screen shots of the work sheet
Answers
Germ cells produce gametes through meiosis. Before DNA replication/8/c. After DNA replication/5/g. Prophase I/9/f. Metaphase I/13/i. Anaphase I/17/b. Telophase I/10/k. Prophase II/18-1/a. Metaphase II/11-2/e. Anaphase II/6-3/h. Telophase II/12-15/d. Gametes/7-16-14-4/j.
What is meiosis?Meiosis is the sequence of events that occur when a germ cell divides and produce gametes. Through Meiosis, a diploid cell (2n) produces four haploid daughter cells (n).
There are two meiotic phases. Before each phase, the cell undergoes the interphase, during which the cell content duplicates and DNA replicates.
Meiosis I: reductive phase.
Chromosomes condensate and became visible. Occurs crossing-over between homologous chromosomes during the prophase. Crossing over makes the daughter cells to be genetically different from the original one. Homologous pairs migrate to the equatorial plane during the metaphase.In the anaphase, chromosomes from the homologous pairs get separated again, and each member migrates forward to a pole. Once in the poles, the nuclear membrane forms during the telophase.Finally, cytokinesis occurs and chromosomes became lax again.
Meiosis II: not reductive division.
In the prophase chromosomes condensate again, During the metaphase, chromosomes join the spindle apparatus and migrate to the equatorial plane. Centromeres divide, and each chromatid goes forward to each pole in the anaphase. Once in the poles, during the telophase, the nuclear membrane forms, and the chromosomes became lax again. Finally, cytokinesis occurs and haploid cells are formed.In the exposed example, each image is numbered and each description is named with a letter. You will find the complete flow chart in the attached files.
The order is as follow.
Stage Image Description
Before DNA replication 8 c
After DNA replication 5 g
Prophase I 9 f
Metaphase I 13 i
Anaphase I 17 b
Telophase I 10 k
Prophase II 18-1 a
Metaphase II 11-2 e
Anaphase II 6-3 h
Telophase II 12-15 d
Gametes 7-16-14-4 j
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what type of energy is stored in the bonds of an atp molecule?
Answers
I think answer is pyrophosphate bond.
What type of scientist would be the best qualified to perform genetic engineering to pro- duce seed that are more productive in agriculture? A. biochemist B. geologist C. molecular biologist D. paleontologist
Answers
The type of scientist best qualified to perform genetic engineering to produce more productive seeds in agriculture would be a molecular biologist, the correct option is C.
Molecular biologists specialize in studying the structure, function, and interactions of molecules within biological systems, including DNA and genes. Genetic engineering involves manipulating the genetic material of organisms, which requires a deep understanding of molecular biology principles.
Molecular biologists have the expertise to identify and isolate specific genes responsible for desired traits in crop plants, such as increased productivity or resistance to pests or diseases. They can then modify or introduce these genes into target plants to achieve the desired outcomes, the correct option is C.
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