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7 December, 12:29

In avocets, curved beaks result from a Z-linked recessives gene. A curve-beak male is mated with a flat-beaked (normal) female. The F1 are interbred to produce the F2. What is the probability of producing a curve-beak female in the F2

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  1. 7 December, 12:48
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    Explanation:

    Z O

    z Zz zo

    z Zz zo

    The males will have two copies of the alleles of the genes present on the Z chromosomes. As females have only one Z chromosome, they will have only one allele for the genes present on the Z chromosome.

    The results from the punnet square show that there will be chance that the females of the F2 progeny will have curved-beaks.
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