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प्रश्न
‘One species’ DNA differs from others in its ______.
पर्याय
phosphate groups
base sequence
sugars
all of these
MCQ
रिकाम्या जागा भरा
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उत्तर
‘One species’ DNA differs from others in its base sequence.
Explanation:
DNA from different species has the same basic chemical backbone, alternating deoxyribose sugars and phosphate groups, but varies in the order (sequence) of the four nitrogenous bases (A, T, G, C). That base sequence is what encodes species-specific genetic information.
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