12-4 Mutations Pg. 307. A. Kinds of Mutations 1. Mutations are changes, or mistakes, made in the...
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Transcript of 12-4 Mutations Pg. 307. A. Kinds of Mutations 1. Mutations are changes, or mistakes, made in the...
12-4 Mutations
Pg. 307
A. Kinds of Mutations
• 1. Mutations are changes, or mistakes, made in the genetic material.
• 2. Types of Mutations:• Point Mutations• Frameshift Mutations• Silent Mutations
A. Kinds of Mutations
• 3. Point Mutations involve a change in one or a few nucleotides.
A. Kinds of Mutations
• 4. Frameshift Mutations shift the “reading” frame of genetic code by inserting or deleting a nucleotide.
Label: Point or Frameshift
• 1. AAG-GGG AUG-GGG • Lysine-Glycine Methionine- Glycine• 2. UUC AUUC• Phenylalanine Isoleucine • 3. AGC-CCC AGC-CGC• 4. UUAG UAG
A. Kinds of Mutations
• 5. Silent Mutations have no observable effect on an organism.
B. Significance of Mutations
• 1. Negative• Cancers• Genetic Diseases– Ex: Sickle Cell Disease and Cystic Fibrosis
B. Significance of Mutations
• 2. Positive• Resistance to Diseases• Physical Advantages– Example: Plant and animal breeders
Word Bank: Mutations, Genetic Diseases, Frameshift, Positive, Effects, Types, Point
Example Example Example Example