This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: Mutations B. Transfer of Genetic Material MUTATIONS A. Definition : 1. Permanent change in the sequence of nucleotides in DNA 2. Passed to all daughter cells (inherited) B. Types of mutations: 1. Spontaneous mutations - due to mistakes occurring during DNA replication 2. Induced mutations - due to mutation causing agents (mutagens - chemicals, UV, etc.) C. Changes in DNA mutation 1. Point mutation - base substitution a. Substitution 1 base b. Inversion 1 base pair 2. Frameshift mutation a. Addition base pairs b. Deletion base pairs c. Alters all triplets beyond the point of addition or deletion 3. Nonsense mutation a. Creates a stop codon in m-RNA (may be due to a point mutation) b. Incomplete protein (nonsense protein) produced 4. Dimer a. Presence UV light b. Covalent bonds formed between adjacent thymines...
View Full Document