Question 6 1 pts A variant of the normal histone H3 is abund

Question 6 1 pts

A variant of the normal histone H3 is abundant in the chromatin at centromeres.

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Question 7 1 pts

In humans, the sequence at centromeres is made of an invariant 6 base-pair sequence that is repeated thousands of times along the chromosome.

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Question 8 1 pts

The single-stranded DNA that extends from most telomeres is intrinsically (i.e., all by itself) resistant to digestion by enzymes that degrade DNA.

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Question 9 1 pts

There is almost no repetitive DNA in the human genome.

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Question 10 1 pts

The rate of hybridization between separated DNA strands provided early infomration on the existence of repetive DNA sequences in genomes.

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Question 11 1 pts

Which form of DNA is easiest to replicate?

Solution

Ans. 6: True. The variant protein is known as CENPA

Ans. 8: False. It is replicated by an enzyme called telomerase and not by polymerase.

Ans. 9: False. Hybridization experiments have revealed that human DNA has ample amount of repetitive sequences

Ans. 10: True. The rate of hybridization is faster due to presence of repetitive sequences which facilitate quick complementary base pairing.

Ans 11: relaxed ie. Non supercoiled DNA is easiest to replicate.