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What is DNA polymorphism? Why is it impo...

What is DNA polymorphism? Why is it important to study it?

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DNA polymorphism refers ro the variation in DNA arising through mutation at non-coding sequences.
A special type of polymorphism, called VNTR (Variable Number of Tendem Repeats), is composed of repeated copies of a DNA sequence that lie adjacent to one another on the chromosome. Since, polymorphism is the basis of genetic mapping of humen genome, therefore, it forms the basis of DNA fingerprinting too.
history as well as in cese of paternity testing .
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Knowledge Check

  • A polymorphic insect is

    A
    Butterfly
    B
    Silverfish
    C
    White ant
    D
    Housefly

  • Polymorphism is due to

    A
    Monogenic inheritance
    B
    polygenic inheritance
    C
    Both (a) and (b)
    D
    None of these

  • Polymorphism occurs in

    A
    Anthozoa
    B
    Scyphozoa
    C
    Rhizopoda
    D
    Hydrozoa

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