A is the ans for this question
Answer:
A single mutation is unlikely to result in cancer. Cancer is usually caused by a series of mutations that accumulate throughout the course of a person's life. As a result, cancer is more common in older adults. They've seen more chances for mutations to accumulate.
Explanation:
The homo sapiens appeared after two million years ago.Some of them spread from Africa into Asia and Europe.
As a result of advancing biotechnology, disease may become a thing of the past.
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