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Why crossing over is important?...

Why crossing over is important?

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`**` Exchange of segments leads to new gene combinations which plays an important role in evolution.
`**` Studies of crossing over reveal that genes are arranged linearly on the chromosomes.
`**` Genetic maps are made based on the frequency of crossing over.
`**` Crossing over helps to understand the nature and mechanism of gene action.
`**` If a useful new combinations is formed it can be used in plant breeding.
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Knowledge Check

  • In meiosis crossing over is initiated at

    A
    Diplotene
    B
    Pachytene
    C
    Leptotene
    D
    Zygotene

  • ____ discovered that crossing over is completely absent in some species of male drosophila.

    A
    Morgan
    B
    Bridges
    C
    Bateson
    D
    Reginald

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