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    what is gene mutation?

    0  Views: 642 Answers: 1 Posted: 13 years ago

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    A gene mutation is a permanent change in the DNA sequence that makes up a gene. Mutations range in size from a single DNA building block (DNA base) to a large segment of a chromosome.
    Gene mutations occur in two ways: they can be inherited from a parent or acquired during a person’s lifetime. Mutations that are passed from parent to child are called hereditary mutations or germline mutations (because they are present in the egg and sperm cells, which are also called germ cells). This type of mutation is present throughout a person’s life in virtually every cell in the body.


    Read more >http://ghr.nlm.nih.gov/handbook/mutationsanddisorders/genemutation



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