Human mitochondrial DNA does not have telomeres because it is: They are sometime

Question

Human mitochondrial DNA does not have telomeres because it is:

They are sometimes described as selfish and called the ultimate parasite.

Which one of the following statements about transposable elements is CORRECT?

Human mitochondrial DNA does not have telomeres because it is:

circular. not in the nucleus. too small to need a telomere. replicated without an RNA primer. They replicate themselves and insert themselves into new positions. They can transpose via DNA replication or an RNA intermediate. All of these choices are correct. They make up 45% of the DNA in the human genome.

They are sometimes described as selfish and called the ultimate parasite.

Explanation / Answer

1. Option A is correct.
Telomeres are present at the ends of a chromosome. But, the mitochondrial genome is double-stranded circular DNA. So, it does not contain linear ends.

2. Option C is correct.
Transposable elements = Selfish genetic elements = Selfish genome parsites.
They constitute up to 50% of the human genome.
They can transpose themselves with the help of transposase via a DNA or an RNA intermediate.

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