Question

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Haploid plants can be produced through in vitro culture of plant gametic cells.
Reason (R): Accurate phenotyping in plant breeding with double haploidy is possible because of their segregating nature.
In the light of the above statements, choose the most appropriate answer from the options given below:

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
• B. Both (A) and (R) are correct but (R) is not the correct explanation of (A)
• C. (A) is correct but (R) is not correct
• D. (A) is not correct but (R) is correct

Hint:

Doubled Haploids are used specifically because they STOP segregation. They lock the plant's traits in place permanently.

Answer 1

The Correct Option is C

Concept: This question deals with the production and genetic properties of haploid and doubled haploid (DH) plants.

Step 1: Evaluating the Assertion.
Assertion (A) is correct. Techniques like anther culture (male gametes) and ovule culture (female gametes) are standard methods for producing haploid plants in a laboratory setting.

Step 2: Evaluating the Reason (The Error).
Reason (R) is incorrect. The primary advantage of doubled haploids is that they are non-segregating. Because they are perfectly homozygous, their phenotype is fixed and they breed true. This "fixed" nature—not a segregating nature—is what allows for highly accurate phenotyping, as there is no genetic "shuffling" in subsequent generations.

Step 3: Conclusion.
Since the first statement is true but the second contains a false genetic premise regarding the nature of doubled haploids, option (3) is the correct choice.