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25 November, 09:24

Billy and Johnny are brothers, but they do not look alike. Which one of the following pairs of factors contributed to this genetic variation?

A - Non-disjunction and mitosis.

B - Cytokinesis and cloning.

C - Crossing over and independent assortment.

D - Asexual reproduction and binary fission.

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Answers (2)
  1. 25 November, 09:43
    0
    C - Crossing Over

    Explanation:

    Crossing over is essentially the gene shuffling and swapping around of genetic information.

    A - is false because mitosis describes the building of nonsexual cells. So in terms of genetics, meiosis is the one you're looking for in this scenario.

    B - Brothers are not clones.

    D - Your parents had to have sex to produce a child. This is not Asexual.
  2. 25 November, 10:15
    0
    Answer:C
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Home » Biology » Billy and Johnny are brothers, but they do not look alike. Which one of the following pairs of factors contributed to this genetic variation? A - Non-disjunction and mitosis. B - Cytokinesis and cloning. C - Crossing over and independent assortment.
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