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Explain the mechanism of sex determinati...

Explain the mechanism of sex determination in insects like Drosophila and grasshopper.

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In grasshopper, there is X-O type of sex determination in which the males have only one x-chromosome along with the autosomes and the females have a pair of X chromosomes.

In Drosophila, the mechanism of sex determination is of XY type. Females have a pair of X chromosomes, while the males have two type of sperms- one having X chromosome and other having Y chromosome.
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Knowledge Check

  • The mechanism of sex determination in birds shows

    A
    Male heterogamety
    B
    femal heterogamety
    C
    Male dominancy
    D
    Female dominancy

  • XO sex determination is seen in

    A
    Man
    B
    Drosophila
    C
    Birds
    D
    Grasshopper

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    What is heterogamy ?Explain the mechanism of sex determination in Drosophila.

    A = ................ type of mechanism for sex-determination is found in insects like Drosophila melanogaster and mammals including human beings.

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