Assertion :- The development & differentiation of embryo into adult organism are the result of coordinated regulation of expression of several sets or genes.
Reason : The expression of all genes are not required simultaneously during development of organism.
A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is Flase.
D. If both Assertion & Reason are false.