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4 May, 02:01

In a certain plant, yellow leaves are dominant and red leaves are recessive. A plant with genotype Yy and a plant with Yy are crossed. If they have four offspring, how many would you predict would have red leaves?

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  1. 4 May, 03:45
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    One offspring would have red leaves.

    Explanation:

    Given

    Yellow leaves are dominant and red leaves are recessive

    Let us assume that the trait of Yellow color of a leaf be represented by "Y"

    and the trait of red color of a leaf be represented by "y"

    When two parent of genotype "Yy" are crossed with each other, the following offsprings are produced as shown in the punnet square below

    Y y

    Y YY Yy

    y Yy yy

    Total four offpsrings are produced out of which only one has red leave as red color is a recessive trait and it will appear only when both the allele in a cell are of red color.

    Thus, one offspring would have red leaves.
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