A test cross is performed to determine if a specific individual is a carrier.The results generate a 50/50 phenotypic ratio.The test subject was therefore ________.

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A 50/50 phenotypic ratio indicates that the individual being tested is heterozygous, meaning they have one copy of the dominant allele and one copy of the recessive allele. The other options (homozygous dominant, homozygous recessive, and heterozygous dominant) would result in different phenotypic ratios in a test cross.

A Test Cross Is Performed to Determine If a Specific