Answer:
Chromatid.
Explanation:
A chromatid is half of a chromosome.
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Most articles pass right through the atom, this means that most of the atom is
Most articles pass right through the atom, this means that most of the atom is an empty space.
What is an atom?An atom is described as a particle that consists of a nucleus of protons and neutrons surrounded by a cloud of electrons.
Protons and neutrons make up the core nucleus of an atom, which is encircled by an electron cloud. In relation to the size of the atom as a whole, the nucleus is exceedingly small.
As a result, the electrons surrounding the nucleus are the primary target of interactions when particles or even light pass through an atom. The majority of the atom's remaining space, which includes the nucleus, is vacant.
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State How Cataract Can Be Treated.
Answer:
Cataract can be corrected by wearing spectacles or contact lens or it can be treated by laser surgery or surgical operation
How can genetic mutations increase the variation in a population over time?
Answer:
The flow of individuals in and out of a population introduces new alleles and increases genetic variation within that population. Mutations are changes to an organism's DNA that create diversity within a population by introducing new alleles.
Explanation:
why is the Jasmine flower an angiosperm?
Is the Jasmine flower gametophyte dominant, sporophyte dominant, 50/50, or sporophyte only?
Jasmine is an angiosperm because its seed is covered by a coat. The jasmine flower is sporophyte dominant.
Angiosperms are the most developed division of the Kingdom Plantae. These are the vascular plants that have the complete food and water transport system that occurs through the tissues phloem and xylem. Also, their seeds are covered by a seed coat.
Sporophyte is the vegetative phase of a plant. It is dominant in angiosperms because they are vascular plants and vascular plants have a dominant sporophyte phase. It is the diploid phase of the plants. Meiosis occurs in this phase to produce the haploid spores.
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Please answer the following 4 questions regarding genetics.
Answer:
1. Carol is heterozygous for hemophilia. Her husband does not carry the allele for hemophilia. What is the probability that they will have a daughter with hemophilia? A son with hemophilia?
Solution:
Since Carol is heterozygous for hemophilia, she has one X chromosome with the hemophilia allele and one X chromosome without the hemophilia allele. Her husband, who does not carry the allele, has one X chromosome without the allele and one Y chromosome.
The probability that they will have a daughter with hemophilia is 0, as the daughter would need to inherit the hemophilia allele from both parents, which is not possible in this case.
The probability that they will have a son with hemophilia is 50%, as the son will inherit the hemophilia allele from Carol (who passes one of her X chromosomes to her son) and the Y chromosome from his father.
2. Jake suffers from red-green colorblindness. He married Janet who is not colorblind nor a carrier. What is the probability that they will have a daughter with color blindness? A son with colorblindness?
Solution:
Jake suffers from red-green colorblindness, which means he has a recessive allele for the condition on his X chromosome. Janet is not colorblind nor a carrier, which means she has two normal X chromosomes.
The probability that they will have a daughter with color blindness is 0, as the daughter would need to inherit the recessive allele for color blindness from both parents, which is not possible in this case.
The probability that they will have a son with color blindness is 50%, as the son will inherit the recessive allele for color blindness from Jake (who passes his X chromosome to his son) and a normal copy of the X chromosome from Janet.
3. William suffers from hemophilia. He married Sandra who is a carrier of the trait. What is the probability they will have a son with the disorder?
Solution:
William has hemophilia, which means he has a recessive allele for hemophilia on his X chromosome. Sandra is a carrier of the trait, which means she has one normal X chromosome and one X chromosome with the hemophilia allele.
The probability that they will have a son with hemophilia is 50%, as the son has a 50% chance of inheriting the hemophilia allele from Sandra (who passes one of her X chromosomes to her son) and a 50% chance of inheriting the Y chromosome from William.
4. Which of the following could be the parents of a colorblind female?
a) A normal male and a normal female (not a carrier)
b) A normal male and a female carrier
c) A colorblind male and a normal female (not a carrier)
d) A colorblind male and a female carrier
Solution:
A colorblind female can only occur if she inherits the recessive allele for color blindness onboth of her X chromosomes. Therefore, the only possible parents of a colorblind female are a colorblind male and a female carrier (option d).
Option a is not possible because both parents are normal and do not carry the color blindness allele. Option b is not possible because the female carrier would need to pass on the recessive allele for color blindness to the daughter, which is not possible as the daughter would inherit a normal X chromosome from the father. Option c is not possible because a normal female cannot carry the recessive allele for color blindness.
Hope this helps!
For any recessive disease to occur it is necessary that both the recessive alleles are expressed in the individual. 1) probability of a hemophilic daughter is 0 and a son is 50%. 2) Probability of a color-blind son is 50% and a daughter is 0. Hemophilic son - 50 %. 4) Option D is correct.
1) The probability that they will have a hemophilic daughter is zero. This is because to express the hemophilic trait one allele of the trait must be inherited from both the parents, but here the mother is a carrier while the father does not carry any allele for the disease.
The probability that they will have a hemophilic son is 50%. This is because he will inherit an X chromosome from his mother who is a carrier of the disease and one Y chromosome from his father.
2) The likelihood of having a color-blind daughter is 0 because the daughter would have to inherit the color-blind recessive allele from both parents.
The likelihood of having a color-blind son is 50% because the son inherits the color-blind recessive allele from Jake (through his X chromosome) and the normal X chromosome from Janet.
3) The likelihood of having a hemophiliac son is 50% because the son inherits 50% of the hemophilia gene from Sandra (passing one of her X-chromosomes to the son) and 50% of the Y-chromosome gene from William.
4) A colorblind woman can only become a colorblind woman if she has a recessive gene for color blindness in both her X-chromosomes. So, the only parents of a female who is colorblind are male and female carriers of the recessive gene.
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The potential energy of organic molecules is most readily available to cells in the form of
Answer:
adenosine thiphosphate
Explanation:
awnsered it lol
If you answer this I’ll give brainliest 50+ points
The isotope oxygen-18 has been used to trace the origin of
1. structure A
2. reaction B
3. gas E
4. gas D
Answer:
4. gas D
Explanation:
Which property (quality) of fossils allows scientists to determine the relative ages of rock layers?
A.Fossils show change over time as species evolve.
B.Fossils form from the remains of living organisms.
C.Fossils are usually found only in sedimentary rock.
D.Fossils can be analyzed to determine their exact age
The property (quality) of fossils allows scientists to determine the relative ages of rock layers are fossils show change over time as species evolve.
What is the minimum age of a fossil?A living being that lived more than 11 thousand years ago is considered a fossil, that is, before the Holocene, which is the current geological epoch. Ancient remains or evidence, but less than 11,000 years old, such as sambaquis, are classified as subfossils.
Chemistry is present in this process, more precisely the element Carbon. The dating of a fossil can be done based on the already known percentage of Carbon-14 (C14) in relation to Carbon-12 (C12) of living matter (without decomposition).
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What is most always in this world, there are always exceptions, but I
diverge) BUT MPST ALWAYS the ending of an enzyme's name?
-ose
-ise
-ase
-use
While there is only one species of Galapagos Island tortoise, there are several subspecies. Larger islands with more wet highlands have lush vegetation near the ground. Tortoises there tend to have high-domed shells and shorter necks, which restrict upward head movement. They also have shorter limbs. They are the heaviest and largest of the subspecies. Smaller drier islands are inhabited by tortoises with longer necks and limbs and with shells that are elevated above the neck, which allow them to browse taller vegetation. Based on the information given, which is a plausible explanation for the ancestry of the tortoise subspecies?
Answer:
Tortoises with better adaptations in shell shape and leg length were selected to exploit the food resources on each island and, thus, they were capable of having more offspring.
Explanation:
Natural selection can be defined as the process of differential survival and reproduction in a given environment due to differences in their phenotypic traits. Thus, these phenotypic traits are selected to be better adapted to their environment. As a consequence of natural selection, organisms evolve by changing their phenotype frequencies over many generations. In this case, phenotypic differences are expressed as variations in shell shape and leg length, which are adaptive traits that were selected on each island.
Answer: D. Individuals with different adaptations in shell shape and leg length best exploited the food resource and left more surviving offspring in each island.
A couple has three children and ALL of them are Non-tasters of PTC.What is the percentage chance that their next child will also be a Non-taster?
There is a 100% chance the next child is a non-PTC taster. Both parents of the child do not have a dominant PTC gene.
PREMISE 1: A cross between two homozygous recessive parents (genotype tt) will have a 100% chance to have non-PTC taster children.
PREMISE 2: A cross between a heterozygous parent (Tt, PTC taster) and a homozygous recessive parent (tt, non-PTC taster) will have offspring with a 75% chance of non-PTC taster and a 25% chance PTC taster.
PREMISE 3: A cross between two homozygous dominant parents (TT, PTC taster) will have a 100% chance to have PTC taster children.
PREMISE 4: A cross between a heterozygous parent (Tt) and a homozygous dominant parent (TT) will have a 100% chance to have PTC taster children with 75% genotype TT and 25% genotype tt.
explain the importance of all 3 biomolecules in general and for making ATP.
The three biomolecules that are used for making ATP are Lipids (fats) , Carbohydrates and Proteins
The biomolecules also known as biological molecules serve a wide range of activities and they vary in shape and their size . It is also considered essential to life because they help organisms develop, survive, and propagate. The biomolecules interact with one another which play a role in the development of organisms .
There are four types of biological molecules which are carbohydrates which is used as an energy source , lipids which is used for storage and support , proteins is used for supporting essential vital functions and amino acids are the developing elements that make up proteins and nucleic acids for storing genetic information .
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The study of biology is correctly defined as
finding scientific solutions to human problems
studying the creatures of land and sea
learning about the interactions and functions of living organisms
studying the health of living creatures
Answer: learning about the interactions and functions of living organisms
Explanation:
Explain the relationship between each pair:Cellular Energy & Carbohydrate
Animals and other organisms obtain the energy available in carbohydrates through the process of cellular respiration.
When we say cellular respiration it is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate (ATP), and then release waste products.
The relationship between these two is that cells take the carbohydrates into their cytoplasm, and through a complex series of metabolic processes, they break down the carbohydrates and release the energy (cellular energy).
Question: Label the image to test your understanding of lymphocyte development and function within the third line of defense.
The Label of the image to test your understanding of lymphocyte development and function within the third line of defense is given in the image attached.
Note that lower two: (under plasma cells) antibodies and (under activated T cell) T cytotoxic
What are lymphocytes' primary roles?A person's body's immune system uses lymphocytes to combat cancer and invading viruses and germs (antigens). Your immune system benefits from lymphocytes' assistance in retaining every antigen it encounters. Some lymphocytes develop into memory cells after an encounter.
So, one can say that Immature lymphoid progenitors are produced from HSCs and then mature via certain differentiation stages during the highly regulated process of lymphocyte formation. For instance, lymphoid-primed multipotential precursors (LMPP) eventually give rise to lymphoid progeny while still having some myeloid potential.
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Other than physical fitness, how does static stretching benefit a person?
The static stretching besides improve physical fitness (flexibility and range of motion) can also promove relaxation, alongation effect in muscles with high ROM (range of motion), improves the recover of muscles after the workout, reduce the risk of acute muscle strain, and because of that improves wellness (since it reduces stiffness in tight muscles that may help the daily tasks being done easily and painlessly).
describe how impulse are transmitted across a synapse
A tiny electric message moves through a long part of a brain cell called the axon. When a message goes to the end of a nerve, it sends chemicals called neurotransmitters. These substances move through a tiny gap and attach to special parts of another nerve cell's outer covering.
What are the impulse?Messages called impulses are sent from one nerve cell to another through a connection called a synapse. This process is called synaptic transmission. Synapses are connections between nerve cells or between nerve cells and other cells, like muscles or glands.
The neuron sending the signal is called the presynaptic neuron. When a signal travels down a nerve cell, it causes little sacs called vesicles to release chemicals called neurotransmitters.
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Plants have specialized structures that help ensure reproduction. Which statement is an example of these structures?
A. An oak tree has thick bark.
B. A banana plant has green leaves.
C. Dandelion seeds blow in the wind.
D. Carrots grow underneath the soil.
The statement that best exemplifies specialized structures in plants is C: "Dandelion seeds blow in the wind."
This statement refers to the specialized structure of dandelion seeds, which have a feathery structure called a pappus that aids in dispersal through wind. Plants have evolved various specialized structures to ensure their reproduction and dispersal. In the case of dandelion seeds, their feathery pappus allows them to catch the wind and be carried away from the parent plant to new locations where they can germinate and grow.
This adaptation increases the chances of their survival and colonization in different areas. Specialized structures in plants can also include adaptations like bright flowers and sweet nectar to attract pollinators, thorns or spines for defense against herbivores, and underground storage organs like tubers or bulbs for nutrient storage and propagation.
These structures play crucial roles in the reproductive success and survival of plants in their respective environments, allowing them to disperse their offspring, attract pollinators, defend against threats, and establish themselves in diverse habitats. Therefore, Option C is correct.
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why do people become thin if they do not eat enough high energy food?
Which of the following is NOT a dual-purpose breed of chicken used in the poultry industry?
Responses
Rhode Island Red
Red Ranger
Plymouth Rock
Black Australorp
Option C Plymouth Rock is NOT a dual-purpose breed of chicken used in the poultry industry.
Breeds with dual purposes: They are used to produce eggs and meat. The Brahma breed is renowned for having a large, proportional body with substantial bones and fine feathering. One of the crucial breed characteristics is pea comb. It comes in two standard varieties: Light Brahma and Dark Brahma.
One of the few hybrids with two distinct uses is the Black Star chicken. With an annual egg production of up to 300, this chicken is a prolific egg layer. Roosters are an excellent choice for a dual-purpose breed because they may easily weigh eight pounds.
Leghorn chickens are categorised as a dual purpose breed since they produce a lot of eggs and have enough flesh to make a respectable table fowl. They're lighter than other dual-purpose breeds like the Australorp.
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What is the MOST frequent cause of slash and burn deforestation?
A. office buildings
B. canals like the Panama Canal
C. National Parks
D. agriculture
Calculate the equilibrium genotype frequencies from a population with allele frequencies p=.25 and q=.75
There are 6.25% homozygous dominant people (AA), 37.5% heterozygous people (Aa), and 56.25% homozygous recessive people (aa).
How to determine equilibrium genotype frequencies?In a population with two alleles, p and q, the frequency of p and q must add up to 1, or 100%. In this case, p = 0.25 and q = 0.75.
Using the Hardy-Weinberg equation, we can calculate the expected frequencies of the three possible genotypes: AA, Aa, and aa. The equation is:
p² + 2pq + q² = 1
where p² represents the frequency of the AA genotype, 2pq represents the frequency of the Aa genotype, and q² represents the frequency of the aa genotype.
Substituting the given values of p and q:
(0.25)² + 2(0.25)(0.75) + (0.75)² = 1
0.0625 + 0.375 + 0.5625 = 1
Therefore, the expected frequencies of the three genotypes are:
AA = p² = (0.25)² = 0.0625
Aa = 2pq = 2(0.25)(0.75) = 0.375
aa = q² = (0.75)² = 0.5625
So in this population, we would expect to see 6.25% homozygous dominant individuals (AA), 37.5% heterozygous individuals (Aa), and 56.25% homozygous recessive individuals (aa).
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Water is essential for life. Its special properties make water the single most important molecule in plant life. Which of the following properties of water enables it to move from the roots to the leaves of plants?
Answer:
Because water exhibits cohesive behavior.
Explanation:
Cohesive behavior can be explained as a behavior where molecules are attracted to each other.
And this means that, water molecules are attracted to each other because of their cohesive behavior. This makes them to be attracted to other substances, such as the walls of the xylem of plants.
In this case, it is believed that the water molecules behave this way because they are polar, that is, there is an electronegativity difference between the bonded atoms. And this enables it to move from the roots to the leaves of the plants.
What trend, if any, is evident in Mel’s data?
The trend that is evident is: Initially, there seems to be support for Mel's hypothesis, but the gold data is not consistent with the predicted trend.
Option C is correct.
How do we calculate?The data for zinc, nickel, copper, and silver shows that as the density increases, the melting point tends to increase.
From the data we can see , the data for gold does not follow this trend, as its density is lower than silver but its melting point is higher.
Therefore, while there is some initial support for Mel's hypothesis, the inconsistency with gold indicates that the relationship between density and melting point is not solely determined by density.
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write a letter to your uncle who is in abroad telling him u want to join vacation classes with ur friends but ur father is facing some financial problems so he can't afford so u need the help of your uncle who is in abroad
Explanation:
Dear Uncle [Uncle's Name],
I hope this letter finds you in good health and high spirits. I have been meaning to share some news with you, and I believe your guidance and support can make a significant difference in my life.
As you know, the summer vacation is fast approaching, and my friends and I have been planning to join vacation classes together. It is an opportunity for us to learn and engage in activities that would enhance our skills and broaden our horizons. We are all excited about the prospect of spending quality time together while acquiring new knowledge.
However, I regret to inform you that my father is currently facing some financial difficulties. Due to unexpected circumstances, he is unable to afford the expenses associated with the vacation classes. It has been a challenging time for our family, and my father's priority is to ensure our basic needs are met.
In light of these circumstances, I am writing to you, dear uncle, with the hope that you may consider extending your support. Your assistance would mean the world to me and enable me to participate in these vacation classes alongside my friends. Your generosity has always been a pillar of strength for our family, and I am sincerely grateful for everything you have done for us.
Attending these classes would not only be a source of knowledge and skill development but also a chance for me to bond with my friends and create lasting memories. It would enhance my educational journey and contribute to my personal growth. I genuinely believe that this opportunity would be a valuable investment in my future.
I understand that everyone has their own financial responsibilities and commitments. Therefore, I completely respect any decision you make, and I am grateful for your consideration. If it is not feasible for you to provide financial assistance at this time, I completely understand, and I will continue to explore other alternatives.
Thank you, dear uncle, for taking the time to read my letter. I eagerly await your response and value your guidance and support. Regardless of the outcome, please know that your love and presence in our lives mean more to me than anything material.
Sending my warmest regards and affection to you and the family. Take care, and I hope to hear from you soon.
With heartfelt gratitude,
[Your Name]
in the diagram shown below which structure would homologous pairs of chromosomes normally be represented
Answer:
3 only
Explanation:
The diagram in this question showcases the FERTILIZATION process involving the combination of two haploid (n) gametes i.e. sperm and egg, to form a diploid (2n) ZYGOTE. The gametes are termed "haploid" because they have only one set of chromosomes.
This means that the sperm from the male contributes one set of chromosome (n) while the egg from the female also contributes one set of chromosome (n) to form two sets of chromosome (2n) i.e. n + n = 2n, in the ZYGOTE. This means that, according to the image, homologous pairs of chromosomes would normally be represented in the structure 3, which is a ZYGOTE.
After 42 days, 2g of phosphorus-32 has decayed to 0.25 g. What is the half life of phosphorus
Please add work!
The half-life of phosphorus-32 (P-32) is 14.8 days.
How do we calculate?N(t) = N₀ * (1/2)^(t / T₁/₂)
N(t) is the amount of the substance remaining at time t
N₀ is the initial amount of the substance
t is the elapsed time
T₁/₂ is the half-life of the substance
Initial amount (N₀) = 2 g
Final amount (N(t)) = 0.25 g
Elapsed time (t) = 42 days
We can rearrange the formula to solve for the half-life (T₁/₂):
(1/2)^(t / T₁/₂) = N(t) / N₀
t / T₁/₂ = log₁/₂(N(t) / N₀)
t / T₁/₂ = log(N(t) / N₀) / log(1/2)
t / T₁/₂ = log(0.25 g / 2 g) / log(1/2)
t / T₁/₂ = log(0.125) / log(1/2)
t / T₁/₂ = -log(8) / log(2)
T₁/₂ = -t / log(8) * log(2)
T₁/₂ = -42 days / log(8) * log(2)
T₁/₂ = 14.8 days
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What are the 3 types of immunity?
Explanation:
innate, adaptive, and passive
In the diagram below, what part of the excretory system is labeled B?
A-
A. Kidney
OB. Ureter
OC. Urethra
OD. Bladder
B.
D
Option(B) Ureter is the correct option.
The ureter is a vital part of the urinary system in humans. It is a muscular tube that connects the kidneys to the urinary bladder. Each human has two ureters, one attached to each kidney, and they play a crucial role in the transportation of urine from the kidneys to the bladder.
The primary function of the ureter is to carry urine that is produced in the kidneys to the urinary bladder for storage before it is eliminated from the body through urination. The ureters accomplish this by using peristalsis, a wave-like muscular contraction, to propel urine along their length.
The ureters have a complex anatomical course. They originate from the renal pelvis, which is the funnel-shaped structure that collects urine from the kidneys. From there, they extend downward, crossing over the brim of the pelvis and passing behind the peritoneum, the membrane lining the abdominal cavity.
The efficient functioning of the ureters is essential for the proper elimination of waste products and maintenance of fluid balance in the body. Any obstruction or abnormality in the ureters can lead to conditions like kidney stones, urinary tract infections, or urinary reflux.
In summary, the ureters are muscular tubes that transport urine from the kidneys to the urinary bladder. They rely on peristaltic contractions to propel urine, and their structure and positioning help ensure unidirectional flow.
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How do organisms within the population share and compete for things they need to survive?