Practice test

Genetics heredity evolution - Test Set 2

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

    ‘Gynecomastia’ is
    1. Development of hair on ears in males
    2. Increased height in females
    3. Development of an extra finger in females
    4. Development of breasts in males
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  2. Question 2

    Hereditary characteristics are passed on from parent to the offspring chiefly through
    1. Genes
    2. Enzymes
    3. Gametes
    4. Centrosome
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  3. Question 3

    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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  4. Question 4

    Who discovered DNA?
    1. James Watson and Francis Crick
    2. Gregor Mendel
    3. Johannsen
    4. HarGovind Khorana
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  5. Question 5

    The sugar present in DNA is
    1. Glucose
    2. Fructose
    3. Deoxyribose
    4. Ribose
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  6. Question 6

    Which one of the following statements regarding histone proteins is correct?
    1. Histones are proteins that are present in mitochondrial membrane
    2. Histones are proteins that are present in nucleus in association with DNA
    3. Histones are proteins associated with lipids in the cytosol
    4. Histones are proteins associated with carbohydrates in the cytosol
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  7. Question 7

    Transcription means the synthesis of
    1. Lipids
    2. Protein
    3. DNA
    4. RNA
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  8. Question 8

    The enzyme which catalyses the unwinding of DNA helix during replication is
    1. Primase
    2. Topoisomerase
    3. Helicase
    4. DNA polymerase
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  9. Question 9

    The hydrophilic nature of DNA is due to the presence of
    1. thymine base
    2. a number of hydrogen bonds
    3. phosphate group
    4. deoxyribose sugar
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  10. Question 10

    Who propounded the theory of evolution?
    1. Spencer
    2. Darwin
    3. Wallace
    4. Huxley
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  11. Question 11

    Which one of the following hypothesis/theory explains the origin of the Universe?
    1. Nebular Hypothesis
    2. Binary Theory
    3. Big Bang Theory
    4. Planetesimal Hypothesis
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  12. Question 12

    Life originated by chemosynthesis was proved in the laboratory by
    1. Sanger
    2. Pasteur
    3. Miller
    4. Aristotle
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  13. Question 13

    The theory of evolution was propounded by
    1. Louis Pasteur
    2. Jean Baptise Lamarck
    3. Gregor Mendel
    4. Charle’s Darwin
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  14. Question 14

    The book, ‘The Origin of Species’ was written by
    1. Linnaeus
    2. Lamarck
    3. Mendel
    4. Darwin
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  15. Question 15

    With reference to the evolution of living organisms, which one of the following sequences is correct?
    1. Octopus-Dolphin-Shark
    2. Pangolin-Tortoise-Hawk
    3. Salamander-Python-Kangaroo
    4. Frog-Crab-Prawn
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  16. Question 16

    Which is the oldest organism on earth?
    1. Blue-green algae
    2. Fungi
    3. Fungi
    4. Euglena
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  17. Question 17

    In the context of organic evolution, the loss of limbs in snakes is explained by the phenomenon of
    1. Use and disuse of organs
    2. Adaptation to living in burrows
    3. Natural selection
    4. Inheritance of acquired characters
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  18. Question 18

    The theory that dinosaurs were driven to extinction by the aftermath of a large asteroid impact on Earth was given by
    1. Wilhelm Rontgen
    2. Luis Alvarez
    3. Henry Moseley
    4. William Crookes
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  19. Question 19

    Genetics deals with
    1. Mendel’s laws
    2. Organic evolution
    3. DNA structure
    4. Heredity and Variations
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  20. Question 20

    The unit of heredity in our body is called
    1. Chromosome
    2. DNA
    3. Gene
    4. Nucleus
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