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A cross used to determine the genotype of an organism showing a dominant phenotype is called a:
AReciprocal cross
BBack cross with heterozygote
CTest cross
DOutcross
Answer & Solution
Correct answer: A. Reciprocal cross
A test cross pairs the unknown individual with the homozygous recessive parent. The offspring ratio directly reveals whether the unknown is homozygous or heterozygous dominant.
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