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Today, 13:33

3. In pea plants, inflated pods are dominant to constricted pods.

Show the cross between a true-breeding inflated pod plant with a

true-breeding constricted pod plant. What are the expected

phenotypes and in what proportion? If two constricted pod plants are crossed what are the expected

phenotypes of the offspring and in what proportion?

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  1. Today, 13:56
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    Let's consider the alleles for a true - breeding inflated pod to be PP. Let's consider the alleles for the constricted pod to be pp. The punnet square for this can be shown as:

    p p

    P Pp Pp

    P Pp Pp

    The results from the punnet square show that there will be 100% (4:0) inflated pods offsprings produced from this cross. However, their genotype will be heterozygous.

    A cross between the constricted pods can be shown as:

    p p

    p pp pp

    p pp pp

    The results from this cross show that the offsprings produced will be 100% constricted pod plants.
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