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AP Biology Mendel's Experiments and Heredity — practice questions

Explore 26 free Mendel's Experiments and Heredity questions in AP Biology Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Mendel's Experiments and Heredity questions and exercises with answers

Showing questions 1–26 of 26.

Mendel called the trait that appeared in the first generation the:Read the answer and worked solution →The offspring of Mendel's first cross were called the:Read the answer and worked solution →In Mendel's F2 generation, the ratio of violet to white flowers was about:Read the answer and worked solution →Different versions of the same gene are called:Read the answer and worked solution →An organism's underlying combination of alleles is its:Read the answer and worked solution →A cross between two true-breeding parents differing in one characteristic is called a:Read the answer and worked solution →A trait is best defined as:Read the answer and worked solution →A paired cross in which the male and female traits are swapped between the two crosses is a:Read the answer and worked solution →What percentage of Mendel's F1 hybrids had violet flowers?Read the answer and worked solution →A probability of one for an event means the event is:Read the answer and worked solution →Rolling a die and flipping a coin at the same time is the classic illustration of the:Read the answer and worked solution →A pea plant with the genotype Vv for flower colour is described as:Read the answer and worked solution →A self-cross of two Yy heterozygotes gives a phenotypic ratio of:Read the answer and worked solution →Each box of a Punnett square represents the:Read the answer and worked solution →Self-crossing Mendel's yellow-seeded F2 plants showed that the fraction breeding true was:Read the answer and worked solution →Mendel's parental pea plants always bred true because both gametes they produced:Read the answer and worked solution →The reason recessive alleles can be carried without being seen is that:Read the answer and worked solution →Working with probability laws in genetics needs large sample sizes because small samples:Read the answer and worked solution →Mendel's 1865 publication reported crosses involving how many characteristics?Read the answer and worked solution →Mendel deduced that each parent in a monohybrid cross contributes:Read the answer and worked solution →Match each genetics term to its meaningRead the answer and worked solution →Sort each genotypeRead the answer and worked solution →Do the Mendel arithmeticRead the answer and worked solution →True or false: Mendel's peasRead the answer and worked solution →Complete the monohybrid resultRead the answer and worked solution →Which one does not belong?Read the answer and worked solution →

Worked practice questions

Mendel called the trait that appeared in the first generation the:

  1. Dominant trait
  2. Recessive trait
  3. Latent trait
  4. Blended trait
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Correct answer: A. Dominant trait

1. Crossing two true-breeding parents gave offspring showing only one of the two forms. 2. Mendel used the term dominant to refer to the trait that was observed. 3. He used recessive to denote the non-expressed trait, the one that had disappeared in this first generation. 4. Nothing blended, which was the point of his choice of characteristics. _Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 12 'Mendel's Experiments and Heredity', sections 12.1-12.3_

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The offspring of Mendel's first cross were called the:

  1. P generation
  2. F1 generation
  3. F2 generation
  4. F3 generation
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Correct answer: B. F1 generation

1. Filial means offspring, a daughter or a son. 2. The first cross produced the first filial generation. 3. These offspring were called the F1, or the first filial generation. 4. Growing seeds from those plants produced the F2, or second filial, generation. _Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 12 'Mendel's Experiments and Heredity', sections 12.1-12.3_

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In Mendel's F2 generation, the ratio of violet to white flowers was about:

  1. One to one
  2. Two to one
  3. Three to one
  4. Nine to one
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Correct answer: C. Three to one

1. Self-crossing the F1 plants brought the hidden form back. 2. In the F2 generation, approximately three quarters of the plants had violet flowers. 3. The remaining one quarter had white flowers. 4. Three quarters against one quarter is a three to one ratio. _Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 12 'Mendel's Experiments and Heredity', sections 12.1-12.3_

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