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Assertion (a) : Superumerary chromosome...

Assertion (a) : Superumerary chromosomes do not usually have anay effect on the phenotype and Hence ,are geneticallyy unnecssery.
Reason( R ) : In some plants supernumerary chromosomes result in decrased vigour.

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

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The correct Answer is:
B
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Assertion (a) : superumerary chromosomes do not usually have nay effect on the phenotype and Hence ,are geneticallyy unnecssery. Reason( R ) : in some plants supernumerary chromosomes result in decrased vigour.

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