GENETICS AND EVOLUTION
GENETIC BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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two F1 hybrids.
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an F1 hybrid and an F2 offspring.
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two parental organisms.
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an F1 hybrid and the homozygous dominant parent.
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an F1 hybrid and an organism that is homozygous recessive for that trait.
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Detailed explanation-1: -The correct answer: A testcross involves e. an F1 hybrid and an organism that is homozygous recessive for that trait. A test cross is widely used to determine the genotypic character of a specific plant. The dominant phenotype of any trait can be shown by both the homozygous dominant plant or heterozygous plant.
Detailed explanation-2: -When the cross is between an F1 hybrid with the homozygous recessive parent, it is known as a Test Cross.
Detailed explanation-3: -∙ The cross between recessive to its hybrid or its F1 plant is called a test cross. ∙ Test cross helps in determining the genotype of the hybrid plant by crossing F1 with the recessive parent.
Detailed explanation-4: -To identify whether the F1 hybrid is homozygous or heterozygous (hybrid), we can use a test cross with the first generation. In a test cross, a cross takes place in between a homozygous recessive trait and an unknown genotype (homozygous or heterozygous).