By the happen of nitrogen cycle
Answer:
D
Explanation:
A somatic mutation cannot be passed down generations. The mutation has to be in the gamete (egg or sperm) to be inherited by the offspring. This can occur when the pre-gametic cells incur a mutation during development into a gamete.
<span>The nitrogenous base pairs, which are linked by hydrogen </span>bonds<span> that also </span>hold<span> the </span>strands together<span>, are between this backbone.
There are 3 hydrogen </span>bonds <span>between guanine and cytosine.</span>
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Adenine and Thymine pair together
Guanine and Cytosine pair together
