Biology : asked on hjeffrey168
 24.09.2021

Sexual reproduction between organisms within the gene pool

. 5

Faq

Biology
Step-by-step answer
P Answered by PhD
1. Natural selection is the process in which organisms who have the ability to survive more in the environment are favored than the other ones. In this type of evolution, the ones who do not adapt well with the environment gradually die off and the one with the best traits are left standing. Among the choices, choice B reflects this explanation.

ANSWER: B.

2. Alleles are forms of a gene which determine the phenotype, or the observable traits, of an organism. Natural selection, on the other hand, is a form of evolution where the organisms with the better phenotype are favored and allowed to survive. Thus, allele controls the phenotype while natural selection works directly on it.

ANSWER: D.

3. Speciation is the process of evolution in which a new species is formed. To obtain this, populations within a species should be reproductively isolated. That is, they should be restricted from mating with each other so that the species is forced to accumulate the genetic differences within different populations and overtime form into a completely different species.

ANSWER: A.

4. As explained earlier, evolution through natural selection favors the organisms who are well adapted to the environment. Thus, it only makes sense to conclude that adaptation increases the fitness of the individual because it allows them to survive longer.

ANSWER: A.

5. A cladogram is a form of diagram which illustrates the relationship of different species. The node in the cladogram is found on the main branch and each one represents a point where two groups shared a common ancestor. While it is true that nodes also represent a new clade, the terminal node or the tip of the cladogram do not form a new one.

ANSWER: C.

6. Charles Darwin is best known for developing the theory of evolution. In this theory, Darwin observed the statements given among the choices EXCEPT for the one in choice D. Darwin only observed physical traits or characteristics and did not delve into the genetic code of organisms.

ANSWER: D.

7. Through the literal meaning of the phrase itself, “common descent” tells us that all organisms descended from one common ancestor. That is, we all shared a common ancestor some time in our evolutionary history. Among the choices, choice A accurately describes this.

ANSWER: A.

8. As the environment where white and brown mice live starts to get more snow, white mice will adapt better to the new environment since their white fur would allow them to camouflage better. Natural selection will act on the population and brown mice will soon decrease in population as the allele for white fur increases.

ANSWER: D.

9. Since most of the cheetahs went extinct during a single generation, they experienced what we call the bottleneck effect. The effect is called as such since the number of species figuratively passed through a bottleneck. For instance, billions of cheetah passing through a barrier (change in climate) only allowed thousands of them to get through.

ANSWER: B.

10. Macroevolution is a term for the event where evolution happens at a bigger scale. Key patterns for this event would be adaptive radiation or when organisms start filling different ecological niches and convergent evolution or the development of similar traits among different organisms as a response to the same environment or niche.

ANSWER: adaptive radiation and convergent evolution
Biology
Step-by-step answer
P Answered by PhD
1. Natural selection is the process in which organisms who have the ability to survive more in the environment are favored than the other ones. In this type of evolution, the ones who do not adapt well with the environment gradually die off and the one with the best traits are left standing. Among the choices, choice B reflects this explanation.

ANSWER: B.

2. Alleles are forms of a gene which determine the phenotype, or the observable traits, of an organism. Natural selection, on the other hand, is a form of evolution where the organisms with the better phenotype are favored and allowed to survive. Thus, allele controls the phenotype while natural selection works directly on it.

ANSWER: D.

3. Speciation is the process of evolution in which a new species is formed. To obtain this, populations within a species should be reproductively isolated. That is, they should be restricted from mating with each other so that the species is forced to accumulate the genetic differences within different populations and overtime form into a completely different species.

ANSWER: A.

4. As explained earlier, evolution through natural selection favors the organisms who are well adapted to the environment. Thus, it only makes sense to conclude that adaptation increases the fitness of the individual because it allows them to survive longer.

ANSWER: A.

5. A cladogram is a form of diagram which illustrates the relationship of different species. The node in the cladogram is found on the main branch and each one represents a point where two groups shared a common ancestor. While it is true that nodes also represent a new clade, the terminal node or the tip of the cladogram do not form a new one.

ANSWER: C.

6. Charles Darwin is best known for developing the theory of evolution. In this theory, Darwin observed the statements given among the choices EXCEPT for the one in choice D. Darwin only observed physical traits or characteristics and did not delve into the genetic code of organisms.

ANSWER: D.

7. Through the literal meaning of the phrase itself, “common descent” tells us that all organisms descended from one common ancestor. That is, we all shared a common ancestor some time in our evolutionary history. Among the choices, choice A accurately describes this.

ANSWER: A.

8. As the environment where white and brown mice live starts to get more snow, white mice will adapt better to the new environment since their white fur would allow them to camouflage better. Natural selection will act on the population and brown mice will soon decrease in population as the allele for white fur increases.

ANSWER: D.

9. Since most of the cheetahs went extinct during a single generation, they experienced what we call the bottleneck effect. The effect is called as such since the number of species figuratively passed through a bottleneck. For instance, billions of cheetah passing through a barrier (change in climate) only allowed thousands of them to get through.

ANSWER: B.

10. Macroevolution is a term for the event where evolution happens at a bigger scale. Key patterns for this event would be adaptive radiation or when organisms start filling different ecological niches and convergent evolution or the development of similar traits among different organisms as a response to the same environment or niche.

ANSWER: adaptive radiation and convergent evolution
English
Step-by-step answer
P Answered by Specialist
1. B. The great white.
(It’s just a description of the shark)

2. B. Ampullae of Lorenzini
(It talks about fish located by electro sense, but more it’s more specifically called Ampullae of Lorenzini)

3. B. Several hunting techniques
(It explains different hunting techniques for hunting animals like seals and dolphins.)

4. C Worlds sub-arctic coastal waters.
(It explains the habitat, where sharks live, which is waters off the coast, but specifically sub-arctic.)

5. D It’s a hacksaw.
(It’s not the past tense of see, we are talking about sharp teeth, which could be referred to like a hacksaw)

6. D Such bites do little damage to buoys and other objects.
(It doesn’t state explicitly that the shark does tear the victim apart, it doesn’t describe the shaking motion, and if never says it swallows its teeth.)

7. D. To enable the sharks to detect the electromagnetic fields.
(The pores are used for Ampullae of Lorenzini, which help the shark detect and hunt prey.)
English
Step-by-step answer
P Answered by Specialist
1. B. The great white.
(It’s just a description of the shark)

2. B. Ampullae of Lorenzini
(It talks about fish located by electro sense, but more it’s more specifically called Ampullae of Lorenzini)

3. B. Several hunting techniques
(It explains different hunting techniques for hunting animals like seals and dolphins.)

4. C Worlds sub-arctic coastal waters.
(It explains the habitat, where sharks live, which is waters off the coast, but specifically sub-arctic.)

5. D It’s a hacksaw.
(It’s not the past tense of see, we are talking about sharp teeth, which could be referred to like a hacksaw)

6. D Such bites do little damage to buoys and other objects.
(It doesn’t state explicitly that the shark does tear the victim apart, it doesn’t describe the shaking motion, and if never says it swallows its teeth.)

7. D. To enable the sharks to detect the electromagnetic fields.
(The pores are used for Ampullae of Lorenzini, which help the shark detect and hunt prey.)
Biology
Step-by-step answer
P Answered by Specialist
I’ll try and help you, but idk what’s with the full on list on top XD.

So for the final question, I think it’s viruses de not take in nutrients. But, the thing is, no one really knows if they are non-living or living organisms. This is the thing, there are come “requirements” for something to be an organism. They are: composed of cells, can reproduce, a able to have a metabolism, growth and development, adaptation through evolution (giving them traits and behaviors), respond to stimuli, are able to have homeostasis, and having genetic material.

Viruses on the other hand, have some of these traits. They do have genetic material but they don’t have a nucleus. Meaning they don’t have a thinking organ or a control station like cells have. Viruses do also respond to respond to stimuli and they do reproduce but in the weirdest way. They have to enter a cell, literally hack it’s system, to then reach its nucleus, to then hack it and obligate it to only replicate the virus by making their RNA enter the nucleus. They hack into the cell with protein “keys” to enter the cell membrane and make the cell transport it to the nucleus.
Biology
Step-by-step answer
P Answered by Master
I’ll try and help you, but idk what’s with the full on list on top XD.

So for the final question, I think it’s viruses de not take in nutrients. But, the thing is, no one really knows if they are non-living or living organisms. This is the thing, there are come “requirements” for something to be an organism. They are: composed of cells, can reproduce, a able to have a metabolism, growth and development, adaptation through evolution (giving them traits and behaviors), respond to stimuli, are able to have homeostasis, and having genetic material.

Viruses on the other hand, have some of these traits. They do have genetic material but they don’t have a nucleus. Meaning they don’t have a thinking organ or a control station like cells have. Viruses do also respond to respond to stimuli and they do reproduce but in the weirdest way. They have to enter a cell, literally hack it’s system, to then reach its nucleus, to then hack it and obligate it to only replicate the virus by making their RNA enter the nucleus. They hack into the cell with protein “keys” to enter the cell membrane and make the cell transport it to the nucleus.

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