Assertion :Test cross is the cross between the $F_{1}$ progeny and either of the parent types. Reason: Back cross is the cross between $F_{1}$ progeny and the double recessive genotype.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
A test cross is a cross involves the breeding of an individual with a phenotypically recessive individual, in order to determine the zygosity of the former by analyzing proportions of offspring phenotype and not the parent types. Back cross is the 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.
So, the correct answer is 'Both Assertion and Reason are incorrect'.

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