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lawyer [7]
3 years ago
5

Why is natural selection, as a scientific model, applied at the population level and NOT at the individual level?

Biology
1 answer:
Leviafan [203]3 years ago
8 0

Answer:

Scientific model of natural selection applies to groups because pressures are experienced only to groups of individuals and not to individuals themselves.

Explanation:

Natural selection, linked to the evolution proposed by Charles Darwin, refers to the way in which different genotypes are presented in a population, subject to reproduction. In simple terms, genetic variations in a population, determined by the need to adapt to their environment, produce changes in the genotypic expression of later generations.

Groups of individuals of a species must be subject to the same environmental pressure and changes in their environment for natural selection to occur and be inheritable to subsequent generations. Changes experienced by a single individual are not significant for offspring within a population.

For natural selection to occur there must be certain conditions:

  • <em>A characteristic in a species must be inheritable. </em>
  • <em>This characteristic, which belongs to a population, must be variable among the individuals who are part of it. </em>
  • <em>Survival and reproductive success depend on genetic variability among individuals of the same species. </em>

Currently, the modern conception of natural selection discusses whether this selection occurs at the group level.

Learn more:

Natural selection and evolution brainly.com/question/312738

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