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Which of the following statements is correct?

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Some amino acids are coded by more than one codon, which makes the genetic code universal.

Histones are not required for nucleosome formation in eukaryotes.

Histones are positively charged basic proteins

The genetic material of QB bacteriophage is single-stranded DNA (ssDNA).

answer is A.

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Detailed Solution

Histones are positively charged basic proteins organised as octamer to which negatively charged DNA winds around to achieve first order of packing -form a nucleosome.

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