Question

Assertion : An organism with lethal mutation may not even develop beyond the zygote stage.
Reason : All types of gene mutations are lethal.

• A. If both Assertion and Reason are true and the reason is the correct explanation of the assertion
• B. If both Assertion and Reason are true but the reason is not the correct explanation of the assertion
• C. If Assertion is true statement but Reason is false
• D. If both Assertion and Reason are false statements

Answer 1

Answer: (C)

Organisms with lethal mutation bear lethal genes that result in the death of the individual carries them.
The completely lethal genes usually cause death of the zygote.
Mutation is a sudden heritable change in the sequence of genes occurring on the chromosomes. Mutation may be beneficial, normal, sub-lethal or lethal.