1.

Assertion: Epstein - Barr virus is an oncovirus. Reason: It stimulates the growth of cancer.A. If both the assertion and the reason are true and the reason is a correct explanation of the assertionB. If both the assertion and reason are true but the reason is not correct explanation of the assertion.C. If the assertion is true but the reason is falseD. If both the assertion and reason are false

Answer» Correct Answer - A
(a) Oncoviruses are cancer-causing viruses and may be DNA or RNA virus e.g., Epstein-Barr-Virus, Herpes simplex type 2 virus etc. This shows that the development of cancerous tumour is associated with certain genes.


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