Mutations. Vocabulary. Right now, write your name and class period on the top right corner of your packet. After that, look at the vocabulary words. You will need to learn these words.
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Germline mutations occur in gametes (sex cells). These mutations are especially significant because they can be transmitted to offspring and every cell in the offspring will have the mutation.
Somatic mutations occur in any of the cells of the body besides gametes. These mutations may have little effect on the organism because they are confined to just one cell and its daughter cells. Somatic mutations cannot be passed on to offspring.
Chromosomal alterations are mutations that change chromosome structure. They occur when a section of a chromosome breaks off and rejoins incorrectly or does not rejoin at all.