Name: George W McKenzie
Age: N/A
Location: N/A
Country: N/A
Date: N/A
Question:
How did the gene for a particular type of cancer enter the gene
pool?
Replies:
Most cancer genes seem to be "good" genes useful in earlier
stages of human development - that is, these genes are involved
in growth and development in embryos. The problem comes when
those genes turn on at other times and cause cells to divide when
they shouldn't. In other cases, there are mutations or infections
with viruses that affect control of those growth genes, turning
them on after they should be off.
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