HEREDITY
BACKCROSS OR TESTCROSS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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AA
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Aa
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Detailed explanation-1: -To identify whether an organism exhibiting a dominant trait is homozygous or heterozygous for a specific allele, a scientist can perform a test cross.
Detailed explanation-2: -A test cross is used to determine if the genotype of a plant with the dominant phenotype is homozygous or heterozygous.
Detailed explanation-3: -Test Cross Beyond predicting the offspring of a cross between known homozygous or heterozygous parents, Mendel also developed a way to determine whether an organism that expressed a dominant trait was a heterozygote or a homozygote. Called the test cross, this technique is still used by plant and animal breeders.
Detailed explanation-4: -If all of the offspring produced express the dominant trait, the individual in question is homozygous for the dominant allele.