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Question

DNA sequences that code for protein are known as

A
Introns
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B
Exons
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C
Control regions
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D
Intervening sequences
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Solution

The correct option is B Exons
The gene encoding for mRNA has two types of sequences called the introns and the exons. The introns are the intervening sequences and they do not code for a functional polypeptide.
The exons are the functional sequences because they contain sequences that are translated into the final protein.

Thus, the correct answer is option B.

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