What is the primary purpose of a test cross?

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(B) test cross is a genetic cross between an individual with a dominant phenotype (but unknown genotype) and a homozygous recessive individual.Its pri

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To determine the genotype of a dominant phenotype individual

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(B) test cross is a genetic cross between an individual with a dominant phenotype (but unknown genotype) and a homozygous recessive individual.Its primary purpose is to determine the genotype of the individual displaying the dominant trait.If the offspring show a $1:1$ ratio of dominant to recessive phenotypes,the parent is heterozygous.If all offspring show the dominant phenotype,the parent is homozygous dominant.

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