Which of the following statement is incorrect for AIDS/HIV?

AIDS is caused by a member of a group of viruses called retrovirus

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It carries single-stranded DNA as its genetic material

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HIV infects white blood cells in the body's immune system called T-helper cells

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AIDS can be diagonosed by enzyme linked immuno-sorbent assay (ELISA).

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Solution

The correct option is B It carries single-stranded DNA as its genetic material
HIV is a retrovirus, which means it carries single-stranded RNA as its genetic material rather than the double-stranded DNA as human cells carries.
Retroviruses also have the enzyme reverse transcriptase, which allow them to copy RNA into DNA and use that DNA "copy" to infect human, or host cells.

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