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AP Biology Unit 7B: Population Genetics & Hardy-Weinberg Evolution — practice questions — page 2

Explore 87 free Unit 7B: Population Genetics & Hardy-Weinberg Evolution questions in AP Biology Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Unit 7B: Population Genetics & Hardy-Weinberg Evolution questions and exercises with answers

Showing questions 31–60 of 87.

Sexual dimorphisms are described as arising particularly where there is more variability in:Read the answer and worked solution →Genetic drift and natural selection are described as processes that:Read the answer and worked solution →The good genes hypothesis holds that males develop impressive ornaments to show off:Read the answer and worked solution →Under both the handicap principle and the good genes hypothesis, the male trait functions as:Read the answer and worked solution →Random change in allele frequencies with no advantage over existing frequencies describes:Read the answer and worked solution →If p is 0.6 in a Hardy-Weinberg population, the frequency of heterozygotes is:Read the answer and worked solution →Match each evolutionary forceRead the answer and worked solution →Tap the modes of selectionRead the answer and worked solution →Work the Hardy-Weinberg termsRead the answer and worked solution →True or false: population evolutionRead the answer and worked solution →Complete the selection modesRead the answer and worked solution →Mendel worked primarily with which organism?Read the answer and worked solution →Mendel's monohybrid F2 ratio is:Read the answer and worked solution →Human sex is determined by:Read the answer and worked solution →Female humans have which sex chromosome pair?Read the answer and worked solution →Homologous organs have:Read the answer and worked solution →The theory of natural selection was proposed by:Read the answer and worked solution →CLASS10 · Biology · Heredity — Spot the ErrorRead the answer and worked solution →CLASS10 · Biology · Heredity — True or FalseRead the answer and worked solution →Who is known as the Father of Genetics?Read the answer and worked solution →In Mendel's monohybrid cross, the phenotypic ratio in F₂ generation was:Read the answer and worked solution →The phenotypic ratio in F₂ of a dihybrid cross is:Read the answer and worked solution →How many pairs of chromosomes are there in a human somatic cell?Read the answer and worked solution →What is the genotype of a heterozygous tall pea plant?Read the answer and worked solution →Sex of a human child is determined by the chromosome contributed by:Read the answer and worked solution →Which of the following is an ACQUIRED trait, not an inherited one?Read the answer and worked solution →In a cross between two heterozygous tall pea plants (Tt × Tt), what fraction of the offspring will be pure dwarf?Read the answer and worked solution →Which pair of alleles correctly represents a homozygous condition?Read the answer and worked solution →Mendel's law of independent assortment applies to:Read the answer and worked solution →In a dihybrid cross with 9:3:3:1 ratio of offspring, what fraction shows both recessive traits?Read the answer and worked solution →

Worked practice questions

Sexual dimorphisms are described as arising particularly where there is more variability in:

  1. Total population size
  2. Yearly rainfall amount
  3. Male reproductive success
  4. Female body size only
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Correct answer: C. Male reproductive success

1. Dimorphism tracks how unevenly reproduction is distributed. 2. Sexual dimorphisms arise in many populations, particularly animal populations. 3. They arise where there is more variability in the male's reproductive success. 4. That variability is greater than that of the females. _Source: OpenStax Biology 2e (CC BY 4.0), Ch 19 'The Evolution of Populations', sections 19.1-19.3_

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Genetic drift and natural selection are described as processes that:

  1. Never overlap at all
  2. Cancel each other out
  3. Replace one another
  4. Occur simultaneously
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Correct answer: D. Occur simultaneously

1. It is tempting to treat evolutionary forces one at a time. 2. Natural selection and genetic drift usually occur simultaneously in populations. 3. They are not isolated events. 4. Drift changes allele frequencies randomly with no advantage to the population. 5. Selection acts at the same time on the same gene pool. _Source: OpenStax Biology 2e (CC BY 4.0), Ch 19 'The Evolution of Populations', sections 19.1-19.3_

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The good genes hypothesis holds that males develop impressive ornaments to show off:

  1. Metabolism and disease resistance
  2. Their exact age in years
  3. Their preferred nesting site
  4. Their total daily food intake
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Correct answer: A. Metabolism and disease resistance

1. Costly ornaments need an explanation in fitness terms. 2. The good genes hypothesis states that males develop these impressive ornaments. 3. They do so to show off their efficient metabolism or their ability to fight disease. 4. The handicap principle offers a parallel explanation. 5. In both, the trait is an honest signal of the males' quality. _Source: OpenStax Biology 2e (CC BY 4.0), Ch 19 'The Evolution of Populations', sections 19.1-19.3_

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