Sovi.AI - AI Math Tutor

Scan to solve math questions
ENFRDEESJAZH-CNZH-TW

QUESTION IMAGE

why is genetic variation important? select all that apply: because indi…

Question

why is genetic variation important? select all that apply:
because individuals cannot evolve without it
because populations can survive in a variety of different situations
because the environment is constantly changing and different alleles are favored in different situations
done

Explanation:

Brief Explanations
  1. For "because individuals cannot evolve without it": Evolution acts on populations, but genetic variation is the raw material for evolution. However, individuals don't evolve, populations do. But genetic variation is necessary for the potential of a population to evolve. Wait, actually, the statement is a bit misleading in terms of individual vs population, but genetic variation is required for evolution (of populations) as it provides the variation on which natural selection acts. But let's check the other options too.
  2. "because populations can survive in a variety of different situations": Genetic variation within a population means there are different traits. So if the environment changes, some individuals with favorable traits (due to genetic variation) may survive, allowing the population to persist in different situations. This is correct.
  3. "because the environment is constantly changing and different alleles are favored in different situations": Since the environment changes, having different alleles (genetic variation) means that in different environmental conditions, some alleles will be advantageous, allowing the population to adapt. This is correct. Wait, but the first option: "individuals cannot evolve without it" – evolution is a population - level process, but genetic variation is needed for any evolutionary change (even at the population level). But the wording about individuals is incorrect in terms of evolution (individuals don't evolve), but maybe the question is using a simplified view. Wait, no, let's re - evaluate. The key is to select the correct reasons for why genetic variation is important.
  • The first option: Evolution is a change in allele frequencies in a population over time. Individuals do not evolve, so the statement "because individuals cannot evolve without it" is incorrect.
  • The second option: Genetic variation gives a population a range of traits. So when faced with different situations (environments), some individuals with suitable traits (due to genetic variation) will survive, helping the population to survive in various situations. This is correct.
  • The third option: The environment is dynamic. Different alleles confer different advantages in different environments. So genetic variation provides the necessary diversity of alleles so that when the environment changes, there are alleles that may be favored, allowing the population to adapt. This is correct.

Wait, maybe I made a mistake with the first option. Let's recall: Genetic variation is the raw material for natural selection. Evolution (of a population) requires genetic variation. But the statement says "individuals cannot evolve" – since evolution is not an individual process, this statement is incorrect. So the correct options are the second and third, and also, wait, maybe the first option is considered correct in a simplified context? No, the biological definition of evolution is change in population allele frequencies. So individuals don't evolve. So the correct options are:

  • because populations can survive in a variety of different situations (second option)
  • because the environment is constantly changing and different alleles are favored in different situations (third option)

Wait, but let's check again. The question is about why genetic variation is important.

Genetic variation is important because:

  • It allows populations to adapt to changing environments (third option: different alleles favored in different situations as environment changes).
  • It increases the chance that a population can survive in different situa…

Answer:

  • because populations can survive in a variety of different situations
  • because the environment is constantly changing and different alleles are favored in different situations