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MCAT Mendelian Genetics — practice questions

Explore 29 free Mendelian Genetics questions in MCAT Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Mendelian Genetics questions and exercises with answers

Showing questions 1–29 of 29.

The scientist regarded as the father of genetics is:Read the answer and worked solution →Scientists of his day wrongly believed inheritance worked by parental traits:Read the answer and worked solution →Mendel studied inheritance using the species Pisum sativum, better known as the garden:Read the answer and worked solution →Mating two true-breeding individuals with different traits is called:Read the answer and worked solution →In his 1865 publication Mendel reported crosses covering characteristics numbering:Read the answer and worked solution →Traits that were expressed in the F1 generation Mendel called:Read the answer and worked solution →Traits hidden in the F1 but reappearing later Mendel called:Read the answer and worked solution →An organism carrying two identical alleles at one locus is described as:Read the answer and worked solution →Crossing true-breeding yellow-seeded and green-seeded peas gives F1 plants that are all:Read the answer and worked solution →Self-crossing an F1 heterozygote is drawn using a Punnett square of size:Read the answer and worked solution →Mendel's F2 counts of 705 violet and 224 white flowers approximate a ratio of:Read the answer and worked solution →A cross with a homozygous recessive partner to reveal an unknown genotype is a:Read the answer and worked solution →The rule that paired genes separate equally into gametes is the law of:Read the answer and worked solution →The rule that genes do not influence each other's sorting into gametes is the law of independent:Read the answer and worked solution →A cross between true-breeding parents differing in two characteristics is a:Read the answer and worked solution →The F2 phenotypic ratio from a standard dihybrid cross is:Read the answer and worked solution →In pea plants round seed shape is dominant over shape that is:Read the answer and worked solution →Ignoring seed colour, the share of a dihybrid F2 generation with round seeds is:Read the answer and worked solution →A recessive disorder preventing proper metabolism of phenylalanine and tyrosine is:Read the answer and worked solution →The probability of an event found by dividing occurrences by opportunities is described as:Read the answer and worked solution →Plants used in Mendel's first-generation crosses were labelled the generation called:Read the answer and worked solution →Catch the genetics wordsRead the answer and worked solution →Pop the Mendel wordsRead the answer and worked solution →Run the genetics gatesRead the answer and worked solution →Slice the genetics wordsRead the answer and worked solution →Dominant or recessiveRead the answer and worked solution →Sort the genetics wordsRead the answer and worked solution →Type the numberRead the answer and worked solution →Genetics bingoRead the answer and worked solution →

Worked practice questions

The scientist regarded as the father of genetics is:

  1. Mendel
  2. Morgan
  3. Miescher
  4. Malthus
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Correct answer: A. Mendel

1. He worked with pea plants in a monastery garden. 2. His crosses revealed the rules of inheritance. 3. That scientist is Gregor Mendel. _Source: OpenStax Biology 2e, Chapter 12, Mendel's Experiments and Heredity._

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Scientists of his day wrongly believed inheritance worked by parental traits:

  1. Bracketing
  2. Blending
  3. Bleaching
  4. Blocking
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Correct answer: B. Blending

1. The expectation was an intermediate offspring. 2. Mendel's crosses showed distinct classes instead. 3. The mistaken idea was blending inheritance. _Source: OpenStax Biology 2e, Chapter 12, Mendel's Experiments and Heredity._

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Mendel studied inheritance using the species Pisum sativum, better known as the garden:

  1. Pea
  2. Pine
  3. Palm
  4. Plum
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Correct answer: A. Pea

1. The plant self-fertilises within its own flowers. 2. It also grows quickly with clear contrasting traits. 3. That plant is the garden pea. _Source: OpenStax Biology 2e, Chapter 12, Mendel's Experiments and Heredity._

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More Biology topics

BiologyGeneticsHeredity