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mars1129 [50]
3 years ago
15

Clarify why test crosses are used in selective breeding.

Biology
1 answer:
Artyom0805 [142]3 years ago
6 0
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. 

<span>Aa x aa = 1/2 Aa dominant and 1/2 aa recessive

</span>
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