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m_a_m_a [10]
3 years ago
11

What sticks to DNA and can cover its expression?

Biology
1 answer:
crimeas [40]3 years ago
6 0
<span>Methyl groups 
</span>DNA<span> methylation is a process by which </span>methyl groups<span> are added to the </span>DNA<span> molecule. Methylation can change the activity of a </span>DNA<span> segment without changing the sequence.</span>
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How did the environment of Arabia serve as a form of protection during much of the region's history?
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Answer: A: Its fertile oases enabled farmers to grow enough food for themselves and for sale.

Explanation: The Arabia region is a region located within the Arabian desert. A desert is an area of extreme heat, often dry weather condition with barren lands that cannot support agriculture and food production. An oases on the other hand is a region of luscious, cultivate-able land within a desert.

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In mice, a male and female are mated, both with long ears. All female have long ears but half the males bave short ears and half
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