The offspring of better-adapted individuals are expected to...

The offspring of better-adapted individuals are expected to make up a larger proportion of the next generation. The most likely explanation is
a. mutations and nonrandom mating.
b. gene flow and genetic drift.
c. mutations and natural selection.
d. mutations and genetic drift

Key Concepts

Natural Selection

Natural selection is the mechanism by which traits that improve an organism’s fitness become more common in a population over time. Organisms with beneficial adaptations are more likely to survive and reproduce, passing on these advantageous traits to their offspring, which leads to a gradual change in the population.

Mutation

Mutation is the process by which random changes occur in the DNA sequence of an organism. These changes provide the raw material for genetic variation, which is crucial for evolution. Without mutation, there would be no new traits on which natural selection could act.

Transcript

00:01 The offspring of better adapted individuals are expected to make a larger proportion of the next generation because.

00:08 So the first thing that pops into my mind here is natural selection.

00:11 So natural selection proposed by darwin is the statement that there is inherent genetic diversity within a certain population.

00:19 And those that are that have better, healthier, stronger genes are able to, in this case, in this example, acquire resources that allow them to survive.

00:30 And so are selected for, and their genes are being able to be passed on to the next generation and make up a larger proportion of the gene pool as opposed to this giraffe that dies because it's, it is short by genetics and is unable to reach the trees and survive.

00:48 And this causes differential reproductive success.

00:53 So we're really talking about here this.

00:57 This is the micro level of how organisms are able to become better adapted to their environments and essentially evolve in the bigger picture.

01:08 So a states that it is mutations and non -randomating.

01:12 So non -random mating, which is a very important concept in hardy -widenberg equilibrium, actually does not change allele frequencies within a population.

01:22 It determines how alleles get sorted, how alleles in the gene pool are sorted into genotypes, but it itself does not cause allele frequencies to change, which is what we're really talking about here in terms of natural selection and changes in the gene pool...

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