Assertion (A) :- polytene chromosomes have a high amount of DNA .
Reason( R) :- poly chromosomes are formed by repeated chroomtids.
A. Both (a) and (R ) are true (r ) is the correct explanation of (A)
B. both (A) and(R ) are true but (R ) is not the correct explanations of (A)
C. (A) is true statement but (R ) is false
D. Both (A) and (r ) arae false
