Biology 2581B Chapter Notes - Chapter 18.1: Somatic Cell, Adaptive Mutation, Gamete
24 Jan 2020
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Mutation designed as an inherited change in genetic information; descendants that inherit the change may be cells or organisms. Costs: many mutations have detrimental effects cause diseases/disorders two broad categories of mutation: somatic and germ line. Somatic mutations arise in somatic tissues (do not produce gametes) Somatic mutations are very common, but usually have no obvious effect on the individual function of the mutant could be taken over by normal cell: mutant cell might die and be replaced by normal cell. Cells with somatic mutation that stimulates cell division can increase in number and spread. Can lead to mosaicism, in which different tissues in the body have different genetic info. Arise in cells that ultimately produce gametes. Can be passed on to future generations offspring will have the mutation in their somatic. Chromosome mutations affect the number or structure of chromosomes. Mutations characterized differently, but here on the basis of molecular nature.
