Thursday, May 7, 2009

Helppp! plzz..mutations in human skin cells?

If a mutation takes place in a human skin cell, will that


mutation be passed on to the person's offspring? Explain


your answer.

Helppp! plzz..mutations in human skin cells?
No.


Only mutations in the sex cells can affect the next generation, because it is only genetic information in the sex cells that only get passed on.
Reply:I would say no, if the DNA in the reproductive cells is unchanged then in theory, it's impossible for the mutation to be passed on to offspring.





Here's a quote form a genetics web site:





"Some of these mutations happen in DNA that is in the cells of our body other than sperm or eggs. These are called “somatic mutations”. For example, we can get mutations in our skin cells from sunlight and get skin cancer.





But these kinds of mutations won’t be passed on. For a change to be seen in the next generation, mutations need to occur in the DNA of cells that produce our eggs and sperm. These are called “germline mutations.” "
Reply:No, that mutation would not be passed on to any offspring because the skin cell does not make the reproductive cells, also called gametes. Only mutations in the cells of the ovaries or testes that are responsible for making gametes would pass the mutation to the offspring.


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