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KVPY Sample Paper KVPY Stream-SX Model Paper-30

  • question_answer
    Brown \[({{y}^{+}})\] is dominant over yellow body colour (y) and red eyes \[({{w}^{+}})\] is dominant over white eyes (w). Both are carried on X chromosome. What is the genotype of a male Drosophila fly that has yellow body colour and red eyes?

    A) \[{{\operatorname{X}}^{w+y}}Y\]

    B) \[{{\operatorname{X}}^{wy}}Y\]

    C) \[{{\operatorname{X}}^{wy+}}Y\]

    D) \[{{\operatorname{X}}^{wy+}}{{\operatorname{X}}^{wy+}}Y\]

    Correct Answer: A

    Solution :

    A male Drosophila has one X chromosome and one Y chromosome. The genotype of male \[Drosophila\]with yellow body colour (recessive) and red eyes (dominant) is\[{{X}^{yw+}}Y\]


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