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Disruptive Selection in Natural Environments

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Disruptive Selection in Natural Environments

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Questions and Answers

What does p2 represent in the Hardy-Weinberg equation?

Frequency of homozygous dominant individuals (correct)

Total allele frequency

Frequency of heterozygous individuals

Frequency of homozygous recessive individuals

Which phenomenon occurs when individuals at the extremes of a phenotypic range have higher fitness than those with intermediate phenotypes?

Directional selection

Stabilizing selection

Neutral selection

Disruptive selection (correct)

What is the purpose of the Hardy-Weinberg theorem?

To predict the frequency of genotypes in a non-evolving population (correct)

To determine the impact of genetic drift on allele frequencies

To calculate the rate of mutation in a population

To explain how allele frequencies change over time due to natural selection

In a population under directional selection, what is expected to happen to the frequency of alleles over time?

The frequency of advantageous alleles will increase Signup and view all the answers

What would disrupt the Hardy-Weinberg equilibrium in a population?

Non-random mating within the population Signup and view all the answers

If disruptive selection is acting on a population, what would you expect to see in terms of phenotypes?

Extreme phenotypes being favored over intermediate phenotypes Signup and view all the answers

What type of selection favours individuals at both extremes of a characteristic range?

Disruptive selection Signup and view all the answers

In disruptive selection, where do individuals at the extremes of the characteristic range have more offspring compared to the rest?

At the extremes of the range Signup and view all the answers

How many distinct phenotypes emerge as a result of disruptive selection?

Two Signup and view all the answers

In West Africa, what are the two types of seeds available for food that are mentioned in the text?

Large and small seeds Signup and view all the answers

What is the main factor influencing sexual selection?

Mating success Signup and view all the answers

What is one way males may compete in sexual selection?

Competitions involving physical features to attract females Signup and view all the answers