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9 January, 17:05

Consider a gene with four alleles a1, a2, a3, and a4. if the cross a1a2 * a3a4 yields two offspring, what is the probability that both of them have the same genotype?

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  1. 9 January, 18:16
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    Possible genetic combinations of offspring are:

    - A1A3

    - A2A3

    - A1A4

    - A2A4

    Therefore, each genotype has a probability of 1/4

    The probability of having thesame genotype the second time is 1/4 * 1/4

    = 1/16

    The probability that both offsprings will have the same genotype is 1/16
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