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Assertion (A) : Crossing of hybrid with the recessive parent is known as test cross.
Reason ( R) : Test cross helps to determine the unknown genotype by crossing it with the recessive parent.a. Both assertion (A) and reason ( R) are true and reason ( R) is the correct explanation of assertion (A).
b. Both assertion (A) and reason ( R) are true but reason ( R) is not the correct explanation of assertion (A).
c. Assertion (A) is true but reason ( R) is false.
d. Assertion (A) is false but reason ( R) is true.
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Text solutionVerified
Sure, here are the step-by-step solutions:
Step 1: The crossing involves a dominant parent (F1) and a recessive parent.
Step 2: The offspring of this cross may inherit recessive genotypic characters from the recessive parent.
Step 3: However, if the recessive genotypic characters are masked by the dominant genotypic characters of the F1 parent, they may appear as dominant characters in the offspring.
Step 4: Therefore, the offspring may exhibit a combination of dominant and recessive genotypic characters, depending on which alleles are inherited from each parent.
Step 5: It is important to note that the appearance of dominant or recessive characters does not necessarily reflect the actual genotype of the offspring, as they may be carriers of the recessive allele without expressing it.
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Question Text | Assertion (A) : Crossing of hybrid with the recessive parent is known as test cross. Reason ( R) : Test cross helps to determine the unknown genotype by crossing it with the recessive parent.a. Both assertion (A) and reason ( R) are true and reason ( R) is the correct explanation of assertion (A). b. Both assertion (A) and reason ( R) are true but reason ( R) is not the correct explanation of assertion (A). c. Assertion (A) is true but reason ( R) is false. d. Assertion (A) is false but reason ( R) is true. |
Topic | Inheritance |
Subject | Biology |
Class | Class 12 |
Answer Type | Text solution:1 |