A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
E) If the assertion is false but reason is true
Correct Answer: A
Solution :
Mutations may be either recessive or dominant. In haploid organisms like viruses and bacteria, both recessive and dominant mutations can be recognized by their effects on the phenotype of the organisms in which they originated. Therefore, in several crops desirable mutants haven been isolated among haploids derived in culture.
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