What is the purpose of a test-cross?
a. A test-cross can demonstrate the efficiency of breeding.
b. A test-cross can reveal an unknown internal phenotype.
c. A test-cross can reveal an unknown genotype.
d. A test-cross is just another term for an experimental cross between two unknown organisms.
e. A test-cross allows a breeder to see how quickly it takes to go from generation to generation for a particular organism.
Ans: c. A test-cross can reveal an unknown genotype.
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