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The mitochondrial DNA in humans encode for how many poplypeptides?

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The mitochondrial DNA in humans encode for how many poplypeptides?

(a) 15

(b) 13

(c) 12

(d) 11

I have been asked this question during an online interview.

My doubt is from Mitochondrial Structure and Function topic in chapter Mitochondrial Structure and Function of Cell Biology

1 Answer

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Correct choice is (b) 13

The best I can explain: The mitochondria possess their own genetic material and the machinery to manufacture their own RNAs and proteins. The mitochondrial DNA encodes a small number of polypeptides which are 13 in humans. These are tightly integrated in the inner mitochondrial membrane along with polypeptides encoded by nuclear genes.

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