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 :
Inversion is a chromosomal mutation in which broken portion may rejoin in reverse orientation and substitution is a point mutation which is caused by replacement or substitution of one or more base pair or nucleotide with another in DNA molecule. Most of the point mutations involve a change in only a single nucleotide or nitrogen base of the cistron.
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