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Today, 11:23

Clarify why test crosses are used in selective breeding.

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  1. Today, 12:15
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    A test cross can be used to determine the genotype of the parent (whether it is homozygous or heterozygous for a specific trait).

    AA x aa = all Aa offspring, dominant phenotype.

    Aa x aa = 1/2 Aa dominant and 1/2 aa recessive
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