21. Species who reproduce sexually will always have variety in their offspring due to
random mixing of the parents' DNA. Why is this a crucial part of evolution?
Answers
Variety in offspring due to random DNA mixing promotes adaptation, survival, and species diversity, essential for evolutionary progress.
Sexual reproduction creates variety in offspring through the random mixing of parents' DNA, known as genetic recombination.
This genetic diversity is a crucial part of evolution as it enables species to adapt to changing environments, allowing for better survival prospects.
Diverse traits within a population increase the chances of some individuals possessing advantageous characteristics that promote reproductive success.
Over time, these traits become more common, leading to evolution. Without this genetic variation, a species would struggle to adapt and could face extinction.
Therefore, sexual reproduction and the resulting variety are vital for species survival and evolutionary development.
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Related Questions
Besides being supplied in the diet, some micronutrients are synthesized in the body. For example, ______ can be synthesized by microorganisms in the intestinal tract.
Answers
Besides being supplied in the diet, some micronutrients are synthesized in the body. For example, vitamin K can be synthesized by microorganisms in the intestinal tract.
Vitamin K is a fat-soluble vitamin that plays a crucial role in blood clotting and bone metabolism. While it is found in certain foods, a significant amount of vitamin K is synthesized by bacteria that naturally reside in the human intestines.
These bacteria, mainly species of the genus Escherichia and Bacteroides, produce vitamin K as a byproduct of their metabolic processes. The synthesized vitamin K is then absorbed by the body and utilized for various physiological functions.
This symbiotic relationship between the host and intestinal bacteria highlights the importance of the gut microbiota in the production and availability of certain micronutrients.
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Why is it necessary to separate oxgynated blood and deoxgynated blood in living organisums?
Answers
Answer:
For efficient transportation of blood.
Explanation:
3. How do you know this? (Quote some results to support your conclusion.)
Answers
What is cancer? What may cause cancer to occur?
Answers
Cancer refers to a group of diseases characterized by the uncontrolled growth and spread of abnormal cells in the body. These cells, known as cancer cells, have the ability to invade and destroy healthy tissues and organs. Cancer can occur in almost any part of the body and can manifest in various forms.
Certain genetic mutations or inherited gene mutations can increase the likelihood of developing certain types of cancer. These mutations can be passed down from parents to children. Exposure to certain substances and environmental factors can increase the risk of cancer. Examples include exposure to tobacco smoke, harmful chemicals (e.g., asbestos, benzene), radiation (e.g., ultraviolet radiation from the sun, ionizing radiation from medical imaging), and certain infections (e.g., human papillomavirus, hepatitis B and C viruses).
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what makes the relationship between genes and traits complicated in humans?
Answers
The relationship between genes and traits complicated in humans is because of environmental factors.
What is the relationship between genes and traits?
Genes are the pieces of DNA that carry information and instructions for traits. Genes determine the characteristics that make each person unique and are responsible for the traits that are passed down from parent to child. Traits are physical and behavioral characteristics that are determined by a person's genes, and can include things like eye color, hair color, height, temperament, and more.
The relationship between genes and traits in humans is complicated because there are many environmental factors that can influence the expression of a gene, thus affecting the trait. For example, a person’s diet, lifestyle, and exposure to different environmental factors can all affect how a gene is expressed. Additionally, many traits are determined by multiple genes. For example, eye color is determined by six genes. Lastly, genes can interact with one another in complex ways, making it difficult to predict the expression of a trait based on the presence of a single gene.
Therefore, environmental factors are the reason why genes and traits are complicated in humans.
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What is carrying capacity?
the maximum number of organisms that can
live in a population
O the ability of the environment to provide
resources for a growing population
the maximum number of organisms an
environment can support for a long time
the maximum number of species that can live
in an ecosystem.
о
Answers
Answer:
the maximum number of species that can live in an ecosystem.
Explanation:
The correct choice in this problem is that carrying capacity is the maximum number of species that can live in an ecosystem.
An ecosystem provides resources for organisms contained within it. The maximum number of organisms that an ecosystem can successfully support is the carrying capacity. Several factors can determined the carriage of an ecosystem. It could be space, resources, mating partners, nutrients etc.Answer: Answer is C
Explanation:
How does potential energy transfer to kinetic energy?
Answers
Answer:
An object has potential energy (stored energy) when it is not in motion. Once a force has been applied or it begins to move the potential energy changes to kinetic energy (energy of motion). Hope this Helps :)
Explanation:
A ball held in the air, for example, has gravitational potential energy. If released, as the ball moves faster and faster toward the ground, the force of gravity will transfer the potential energy to kinetic energy. The higher the ball, the more gravitational potential energy -- it will fall longer and faster as it accelerates toward the earth
Potential energy is the energy that an object has at the starting height and kinetic energy is the energy it has released
List the molecule if it is a reactant or product and answer the following questions. Indicate which stage of photosynthesis or cellular respiration the molecule is involved in.1. What organisms does it occur in?2. Where does it occur in a eukaryotic cell?3. Role of oxygen4. Role of carbon dioxide5. Role of water6. Role of glucose7. Role of sunlight8. Role of ATP
Answers
The reactants are the molecules involved in the reaction, and the products are the molecules that results from the reaction.
Photosynthesis converts carbon dioxide and water into oxygen and glucose.
Cellular respiration converts oxygen and glucose into water and carbon dioxide.
1. Photosynthesis occurs in plants | Cellular respiration occurs in plants and animals
2. Photosynthesis occurs in the chloroplast | Cellular respiration occurs in the mitochondria
3. In photosynthesis oxygen is a product | In cellular respiration it is a reactant
4. In photosynthesis carbon dioxide is a reactant | In cellular respiration it is a product
5. In photosynthesis water is a reactant | In cellular respiration water is a product
6. In photosynthesis glucose is a product | In cellular respiration glucose is a reactant
7. In photosynthesis the sunlight is a reactant | In cellular respiration sunlight is not involved, it happens anytime
8. In photosynthesis ATP is a product (from glucose breakdown) | In cellular respiration ATP is also a product (from glucose breakdown)
A cell with 82% water is placed in a solution with 25% water Size
What describes this process, and is energy needed?
A)
Passive Transport and Energy is Needed
B)
Osmosis and No Energy Needed
Diffusion and No Energy Needed
D)
Active Transport and Energy is Needed
Answers
Sorry if I I’m wrong
A) passive transport and energy is needed
A) passive transport and energy is needed
A) passive transport and energy is needed
Which task is not carried out by fire investigators to determine the origin of a fire?
collecting fingerprints
Ophotographing burned remains
examining burn patterns on the floors, walls, and ceilings
Oanalyzing samples for accelerants
Answers
Fire investigators do not carry out collecting fingerprints (option a) as part of determining the origin of a fire.
Fire investigators primarily focus on tasks such as photographing burned remains, examining burn patterns on floors, walls, and ceilings, and analyzing samples for accelerants to determine the origin of a fire.
Collecting fingerprints is not a task typically performed by fire investigators, as their main goal is to understand the fire's cause and progression.
Fingerprint collection is usually handled by forensic experts or law enforcement if a criminal element is suspected.
Fire investigators collaborate with these experts when necessary, but their main focus remains on the fire itself.
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in which habitat should one find snapping shrimp most closely related to shrimp that live in habitat a4?
Answers
The habitat should one find snapping shrimp most closely related to shrimp that live in habitat A4.
The snapping shrimp should be most closely related to shrimp that live in habitat A4, which is described as having lots of algae and plant life but no coral or seaweed. The reason why is that snapping shrimp are found in a variety of marine environments, but they typically prefer shallow-water habitats that have lots of structure and plenty of hiding places.
Algae and plant life provide the ideal conditions for snapping shrimp because they can easily burrow into the sand or mud and create a safe haven where they can rest and hide from predators. Coral and seaweed may provide some structure, but they do not offer the same level of protection as algae and plant life. Therefore, the snapping shrimp should be most closely related to shrimp that live in habitat A4.
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Which human activity can produce disruption of fish breeding habits, increase in mosquito population, and flood control? construction of dams to produce electricity habitat destruction that decreases beaver population increased erosion due to improper farming techniques overfishing in artificial lakes
Answers
Answer:
A
Explanation:
edge
The construction of dams to produce electricity is a human activity that can produce disruption of fish breeding habits.
Human activities which have the potential of affecting the ecosystem are called anthropogenic activities. These activities could have a lasting impact on the ecosystem such as disruption of fish breeding habits.
Dams are structures built in water for the purpose of irrigation or electricity generation. The construction of dams to produce electricity is a human activity that can produce disruption of fish breeding habits, increase in mosquito population, and flood control.
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What are the 5 notes from magic school bus goes on air (the most 5 important things they say)
Answers
Answer:
1. Ms. Frizzle’s kids trap air in containers and discover that air is pushy stuff.
2. How do you know that air is real? (One way: Feel wind, breath.)
3. The students explore how air pressure can hold up heavy objects.
4 and 5 are attached in an image below.
Explanation:
The picture below shows the typical structure of what?
Answers
Which lineages of vertebrates are aquatic and which are terrestrial (live octand)? ray-finned fish v lobe-finned fish 1. aquatic mammals 2. terrestrial amphibians 3. both: but at different stages of their life reptiles Save Question 6 (0.5 points) Match the anatomical term with the organ system it belongs to De Saved Deta stomach
Answers
In terms of lineages of vertebrates, ray-finned fish and lobe-finned fish are aquatic.
Aquatic mammals are also aquatic, while terrestrial amphibians are mostly terrestrial. Reptiles can be both aquatic and terrestrial, depending on the species.
In more detail, ray-finned fish and lobe-finned fish are adapted to aquatic environments, having fins and gills for movement and respiration. Aquatic mammals, such as whales and dolphins, have evolved for life in the water with specialized features like streamlined bodies and flippers.
Terrestrial amphibians, like frogs and salamanders, mainly live on land, though they still rely on water for reproduction. Finally, reptiles, which include turtles, lizards, and snakes, can be found in both aquatic and terrestrial habitats, with different species adapted to either lifestyle.
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In watermelons, bitter fruit (B) is dominant to sweet fruit (b), and yellow spots (S) are dominant to no spots (s). The genes for these two characteristics assort independently. A homozygous plant that has bitter fruit and yellow spots is crossed with a homozygous plant that has sweet fruit and no spots. The F1 are intercrossed to produce the F2. If an F1 plant is backcrossed with the sweet, unspotted parent, what phenotypic proportion is expected in the offspring
Answers
If an F1 plant is backcrossed with the sweet, unspotted parent, the phenotypic proportion that is expected in the offspring will be in the ratio of 1:1:1:1.
What is Backcross?Backcross may be defined as a type of cross where the F1 hybrid is crossed with either the recessive or dominant traits.
This question typically represents a dihybrid cross implicating two genes, one coding for fruit taste and the other for spot color. The allele for bitter taste (B) and yellow spot (S) is dominant over the allele for sweet taste (b) and no spot (s) respectively.
So, a heterozygous F1 resulting from a cross between a purebred dominant (bitter fruit, yellow spot) and purebred recessive (sweet fruit, no spot) will have a BbSs genotype.
When the F1 hybrid BbSs is backcrossed with the sweet, unspotted parent (bbss), the phenotypes with their proportions are given below:
Bitter fruit, yellow spot (BbSs, 1)Bitter fruit, no spot (Bbss, 1)Sweet fruit, yellow spot (bbSs, 1)Sweet fruit, no spot (bbss, 1).The Punnett square of this cross is described below:
Therefore, if an F1 plant is backcrossed with the sweet, unspotted parent, the phenotypic proportion that is expected in the offspring will be in the ratio of 1:1:1:1.
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What makes up chromatin?
RNA wrapped around proteins called histones
DNA wrapped around proteins called histones
a mixture of DNA, RNA, and other nucleic acids
long chains just made up of DNA
Answers
B. DNA wrapped around proteins called histones makes up chromatin.
DNA- DNA is the molecule present in nearly all cells that contains the genetic information specific to each individual. It is in charge of producing the proteins necessary for cellular growth and development. DNA strands in chromosomes are tightly wound. DNA segments that code for certain proteins are known as genes.
Histones- Histones are fundamental proteins that may link with negatively charged DNA thanks to their positive charges. Some histones serve as spools for the DNA's filamentous thread to wind around. When chromatin is stretched, it resembles a string of beads under the microscope which is known as Nucleosomes.
Chromatin- The term "chromatin" describes the DNA and protein combination that makes up the chromosomes present in the cell of humans as well as other higher creatures.
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Clownfish are well adapted to living in coral reefs. Which feature of clownfish shows this?
its immunity to the poisonous anemones that live on coral
its bright colors, like many of the coral reef fish species
the ability to survive in great depths
the ability to survive in the cold
Answers
Answer:
Number 1
Since it does not have immunity, it will not be able to live in coral reefs (viewpoint)
Clownfish immunity to the poisonous anemones that live on coral. So, the correct option is A.
What are Coral reefs?A coral reef is defined as an underwater ecosystem characterized by reef-building corals, which are formed from colonies of coral polyps held together by calcium carbonate. Coral reefs are made of stony coral whose polyps form groups in groups.
Coral reefs are described as vast formations made of limestone deposited by coral polyps, also called "rainforests of the sea", coral reefs support approximately 25 percent of all known marine species.
Clownfish are well adapted to living in coral reefs whose immunity to the poisonous anemones that live on coral.
Thus, Clownfish immunity to the poisonous anemones that live on coral. So, the correct option is A.
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BRAINLIEST PLS HELP! Balance this equation and be sure to show your work. NaCl + H2O —→ Cl2 + NaOH + H2
Answers
Answer:
2NaCl + 2H2O —→ Cl2 + 2NaOH + H2
Work:
NaCl + H2O —→ Cl2 + NaOH + H2
Na-1 Na-1
Cl-1 Cl-2
H-2 H-1+2
O-1 O-1
2NaCl + 2H2O —→ Cl2 + 2NaOH + H2
Na-2 Na-2
Cl-2 Cl-2
H-4 H-2+2
O-2 O-2
what does it mean if something undergoes a "mutation"?
Answers
Which term describes the relationship in which one organism lives inside the other one. Check ih correct answer
Answers
Answer:
The term that describes the relationship in which one organism lives inside the other one is endosymbiosis.
Explanation:
2. Explain where a person’s DNA comes from.
Answers
Answer:
Each cell in your body has DNA, but the DNA formation was influenced by your parents. Their genes formed your genes.
Which statement about scientific theories is true?
• A. Scientific theories prevent new questions from being asked.
B. Scientific theories are
always unreliable.
• C. Scientific theories can never be proven wrong.
D. Scientific theories can be rejected as a result of
evidence.
new, reliable
SUBMIT
Answers
D. scientific theories can be rejected as a result of new, reliable evidence.
Option D is correct.
The scientific method does not always lead to a scientific theory; theories, like hypotheses, are subject to justification or rejection. As more information is gathered, theories can be revised or changed, increasing the forecast's accuracy over time.
The development of scientific knowledge and the application of amassed information are based on theories. In order to create new technologies or discover a cure for a sickness, scientists employ hypotheses.
Therefore, it is correct that "Scientific theories provide an explanation of phenomena based on empirical evidence, logic, and discussion."
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Algae blooms are most often caused by
Answers
Answer:eutrophication
Explanation:
correctly label the following parts of the pericardium and the heart walls.
Answers
The outer layer of the heart wall is the epicardium, the middle layer is the myocardium, and the inner layer is the endocardium.
what are the parts of the pericardium and the heart walls?
The pericardium consists of two layers: the fibrous and the serous. The fibrous pericardium is a conical-shaped sac. Its apex is fused with the roots of the great vessels at the base of the heart. Its broad base overlies the central fibrous area of the diaphragm with which it is fused.The pericardium is the fibrous sac that surrounds the heart. It can be divided into three layers, the fibrous pericardium, the parietal pericardium, and the visceral pericardium. The parietal and visceral pericardia together form the serous pericardium.The main difference between myocardium and pericardium is that the myocardium is the muscular layer of the heart made up of heart muscles whereas the pericardium is the fibrous encase of the heart made up of connective tissue.To learn more about heart walls refers to:
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In ur own words, Explain how natural selection befits a population
Answers
In two or more complete sentences describe the relationship between tralts, genes, chromosomes and DNA.
Answers
DNA carries the genetic code that determines the characteristics and traits of living things where the nucleus of a cell contains chromosomes made up of long chains of DNA molecules where the genes are small segments of DNA.
What are Chromosomes?A chromosome is defined as a long DNA molecule that contains part or all of an organism's genetic material, which are very long thin DNA fibers that are coated with packaging proteins; The most important of these proteins in eukaryotic cells are the histones.
DNA, genes and chromosomes work together to make us where chromosomes carry DNA in cells while DNA is responsible for building and maintaining the human structure. Genes are segments of DNA that give us the physical characteristics that make us unique.
Thus, DNA carries the genetic code that determines the characteristics
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Suppose a dominant allele causes a plant to die before it can reproduce. Over time what would probably happen to the frequency of the allele in the population?
A. The dominant allele would increase.
B. Heterozygous individuals would increase.
C. The dominant allele would decrease.
D. The allele would cause a mutation.
Please it's super important.
Answers
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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Is the DNA in your brain cells the same as the DNA in your toe cells?