Practice test

Genetics heredity evolution - Test Set 3

Review 20 exam-focused questions with detailed explanations, then start the interactive test when you are ready.

20 questions

Questions and explanations

  1. Question 1

    ho is the father of modern genetics?
    1. Gregor Johann Mendel
    2. Hugo de Vries
    3. Charles Darwin
    4. Thomas Hunt Morgan
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  2. Question 2

    Nobel Prize-winning scientist James D. Watson is known for his work in which area?
    1. Metallurgy
    2. Meteorology
    3. Environmental protection
    4. Genetics
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  3. Question 3

    Mendel’s principles of inheritance are based on
    1. vegetative reproduction
    2. asexual reproduction
    3. sexual reproduction
    4. All of the above
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  4. Question 4

    How many pairs of contrasting characters in pea were selected by Mendel?
    1. 7
    2. 3
    3. 4
    4. 2
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  5. Question 5

    Hereditary characteristics are passed on from parent to the offspring chiefly through
    1. genes
    2. enzymes
    3. gametes
    4. centrosome
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  6. Question 6

    Mendel’s principle of inheritance is based on
    1. vegetative reproduction
    2. asexual reproduction
    3. sexual reproduction
    4. All of the above
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  7. Question 7

    The term ‘gene’ was coined by
    1. TH Morgan
    2. WL Johanssen
    3. G Mendel
    4. De Vries
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  8. Question 8

    Genes are not found in pairs
    1. in body cells
    2. in ovary after fertilisation
    3. in gametes
    4. in zygotes
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  9. Question 9

    Gene is
    1. A segment of DNA
    2. A segment of DNA and histone
    3. A segment of DNA, RNA and histone
    4. All of the above
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  10. Question 10

    A cross between homozygous recessive and heterozygous plant is
    1. Back cross
    2. Test cross
    3. Monohybrid cross
    4. Dihybrid cross
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  11. Question 11

    A pair of contrasting characters controlling the same trait is called
    1. factors
    2. loci
    3. allele
    4. lineage
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  12. Question 12

    Which of the four blood groups A, AB, B and O is called universal donor?
    1. O
    2. A
    3. B
    4. AB
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  13. Question 13

    A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and ‘O’ negative. The blood group of the three sons is ‘A’ positive, ‘B’ positive and ‘O’ positive. The blood group of the adopted son is
    1. O positive
    2. A positive
    3. B positive
    4. Cannot be determined on the basis of the given data.
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  14. Question 14

    Allosomes are
    1. cell organelles
    2. plant hormones
    3. alleles
    4. sex chromosomes
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  15. Question 15

    Sex of the baby depends on whose chromosomes?
    1. Mother
    2. Father
    3. Both mother and father
    4. Grandmother
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  16. Question 16

    The sex of a newborn baby is determined by the chromosome inherited from
    1. the mother
    2. the father
    3. mother’s mother
    4. father’s father
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  17. Question 17

    Coupling and repulsion are the two states of
    1. linkage
    2. chiasma
    3. mutation
    4. crossing over
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  18. Question 18

    When one gene pair hides the effect of the other unit, the phenomenon is referred to as
    1. Epistasis
    2. Mutation
    3. None of options
    4. Dominance
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  19. Question 19

    Which one of the following statements explains higher mutation rate and faster evolution found in RNA virus?
    1. RNA is relatively unstable compared to DNA.
    2. Virus can multiply only within the living cell of a host.
    3. Metabolic processes are absent in virus.
    4. Virus can remain latent for a long period.
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  20. Question 20

    Double-helical structure of DNA was given by whom?
    1. Jacob and Monod
    2. Watson and Crick
    3. H G Khorana
    4. None of the above
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