SCIENCE
GENETIC AND MENDELS LAW OF HEREDITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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p>F<sub>1</sub></p> generation
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<p>F<sub>1</sub></p> hybrid with a recessive parental type
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<p>F<sub>2</sub></p> with dominant parental type
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<p>F<sub>2</sub></p> generation
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Detailed explanation-1: -The test cross is another fundamental tool devised by Gregor Mendel. In its simplest form, a test cross is an experimental cross of an individual organism of dominant phenotype but unknown genotype and an organism with a homozygous recessive genotype (and phenotype).
Detailed explanation-2: -The correct option is D Back cross. Backcross is crossing of a hybrid with one of its parents or an individual genetically similar to its parent, in order to achieve offspring with a genetic identity which is closer to that of the parent. Back cross is done multiple times to create pure lines of organisms.
Detailed explanation-3: -In a test cross, the F1 generation is exclusively crossed with the recessive parent only. The test cross helps in determining the genotype of the F1 generation. In the outcross, the crossing is done between the F1 generation and the dominant parent. It is done to increase genetic diversity.
Detailed explanation-4: -A test cross is a cross between the hybrids of F2 generation or progeny of F1. In this cross, the F2 hybrid is crossed with the homozygous recessive parent of the parental generation. The offsprings or hybrids produced from this cross are studied.