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Cancer

In humans, re...

Question

In humans, retrovirus is considered as a cause of cancer because

A

In their genome oncogene is present

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B

Their hereditary material mode up of single stranded RNA

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C

They have a gene for reverse transcriptase

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D

In their genome their may be cellular protooncogene

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Solution

The correct option is A In their genome oncogene is present
In humans retrovirus is considered as a cause of cancer because in their genome cellular proto-oncogene is present. A proto-oncogene is a normal gene that can become an oncogene due to the mutations or increased expression. The resultant protein encoded by an oncogene is known as oncoprotein.

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