The diagram below shows the frequency of alleles on two...

The diagram below shows the frequency of alleles on two species of wind-pollinated plants, as well as the prevailing wind direction. These frequencies have been fairly stable for around 10 years. However, climate change has created a new prevailing wind direction, as shown in the diagram. How will the two populations likely evolve in the future? a. natural selection will cause the frequency of B to increase in population 1 b. gene flow will cause the frequencies of A and B to drop in population 3 c. genetic drift will cause the frequencies of A and C to increase in population 1 and 2 d. inbreeding will reduce the frequency of allele B in population 2 and 3

The diagram below shows the frequency of alleles on two species of wind-pollinated plants, as well as the prevailing wind direction. These frequencies have been fairly stable for around 10 years. However, climate change has created a new prevailing wind direction, as shown in the diagram. How will the two populations likely evolve in the future?
a. natural selection will cause the frequency of B to increase in population 1
b. gene flow will cause the frequencies of A and B to drop in population 3
c. genetic drift will cause the frequencies of A and C to increase in population 1 and 2
d. inbreeding will reduce the frequency of allele B in population 2 and 3

Key Concepts

Allele Frequency

Allele frequency is a measure of how common a particular allele is in a population. It is a fundamental aspect of population genetics, reflecting the impact of evolutionary processes such as selection, mutation, gene flow, drift, and mating patterns on genetic diversity.

Inbreeding

Inbreeding is the mating between closely related individuals, which can increase the probability of homozygosity and the expression of deleterious recessive alleles. This process may reduce genetic diversity within a population and affect its overall fitness.

Gene Flow

Gene flow involves the movement of alleles between populations due to the migration of individuals or their gametes. This process can homogenize genetic differences between populations and introduce new genetic material that may influence adaptive potential.

Natural Selection

Natural selection is the process by which traits that improve an organism's chances of survival and reproduction become more common in a population over time. It plays a key role in evolution as environmental changes favor individuals with advantageous traits, leading to adaptive shifts in allele frequencies.

Genetic Drift

Genetic drift refers to random fluctuations in allele frequencies from one generation to the next, particularly in small populations. Unlike natural selection, genetic drift is chance-driven and can lead to the loss or fixation of alleles independent of their adaptive value.

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