Mutation

25.4 Mutation

In this lesson, you will learn that a change in the sequence of bases in DNA or RNA is called a mutation. Does the word mutation make you think of science fiction and bug-eyed monsters? Think again. Everyone has mutations. In fact, most people have dozens or even hundreds of mutations in their DNA. Mutations are essential for evolution to occur. They are the ultimate source of all new genetic material in a species. Although most mutations have no effect on the organisms in which they occur, some mutations are beneficial. Even harmful mutations rarely cause drastic changes in organisms.

Pay special attention to the following terms

Point Mutations (substitutions)

Frameshift Mutations (additions or deletions)

Instructions - complete the following

1. Read Inquiry into Life text pg 516-517 or Digital Book p117-122.

2. Watch the following video lesson --> Mutation & DNA (Mr. Bleecker)

3. Notes - Mutation

4. Watch the following video(s)

DNA Mutations with the Amoeba Sisters!