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Hepatitis-B viral genome contains:

A. 259 nucleotides
B. 459 nucleotides
C. 359 nucleotides
D. 159 nucleotides

1 Answer

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Final answer:

The Hepatitis B virus (HBV) genome is much larger than any of the options provided; it actually consists of approximately 3,200 base pairs, not 259, 459, 359, or 159 nucleotides.

Step-by-step explanation:

The Hepatitis B virus (HBV) does not have a genome made up of such a small number of nucleotides as presented in the options A, B, C, or D. The genome size of HBV is much larger, with partial double-stranded DNA that is approximately 3,200 base pairs long.

Variability in the genome size exists among different viruses, with sizes ranging from a few thousand base pairs to millions. The genome of the Hepatitis B virus reflects the complex structure of the virus and is integral to the production of vaccines, as the surface antigen (HBsAg) derived from the genome is used in subunit hepatitis B vaccines. These vaccines, like the one obtained by inserting a synthetic nucleotide sequence into yeast, have been crucial in protecting against HBV infections.

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