গুয়ানিন (G) এবং সাইটোসিন (C)-এর মধ্যে কয়টি হাইড্রোজেন বন্ধনী থাকে?

A 3

B 2

C 1

D 4

Correct Answer & Explanation

Option A

Option A is the correct answer according to official curriculum guidelines.

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