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 :
Chromosomes are stained with special fluoroscent dyes that have differential affinity for different parts of the chromosomes. It brings about specific banding pattern. Bands are segments of stained chromosomes that appear lighter, darker or stained as compared to adjacent parts. Banding technique of chromosome staining is highly useful in knowing various types of chromosomal aberrations or abnormalities like additions, deletions and inversions.
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