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(C) : $A$ test cross is performed to determine the unknown genotype of an organism showing a dominant phenotype. In a typical test cross, the organism

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test cross

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(C) : $A$ test cross is performed to determine the unknown genotype of an organism showing a dominant phenotype. In a typical test cross, the organism with the dominant phenotype is crossed with a homozygous recessive parent. This method allows researchers to identify whether the dominant individual is homozygous or heterozygous by analyzing the phenotypic ratio of the offspring. If the offspring show a $1:1$ ratio of dominant to recessive phenotypes, the parent was heterozygous. If all offspring show the dominant phenotype, the parent was homozygous dominant.

$A$ cross in which an organism showing a dominant phenotype is crossed with the recessive parent in order to know its genotype is called

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