1. Chromosomal Mutations

2. Easy as Pie
Paradise
Mashed Potatoes

3. Chromosomal Mutations
Target: I will be able to identify the main types of chromosomal mutations.
Mutation: A sudden change in the structure or the amount of genetic material.
Mutations, Crossing Over, and Independent Assortment increase genetic variation in a population.
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4. Chromosomal Mutation: An abnormal change in the structure of all or part of a chromosome or the number of chromosomes.
Types of Chromosomal Mutations:
1. Deletion: When a piece of chromosome is missing.

5. 2. Duplication/Addition: When a piece of chromosome is added to the homologous chromosome.
3. Translocation: When a piece of chromosome is added to the nonhomologous chromosome.

6. 4. Inversion: When the order of genes is switched in a chromosome.
5. Nondisjunction: When disjunction doesn’t occur correctly during anaphase of meiosis, so the gamete has an extra or missing chromosome.

7. R r
R r
R r
R r R r R r

8. 4. Inversion: When the order of genes is switched in a chromosome.
5. Nondisjunction: When disjunction doesn’t occur correctly during anaphase of meiosis, so the gamete has an extra or missing chromosome.
Chromosomal Mutations
Summary:

9. Identifying Mutations Activity
Father: Mother: A B C D E a b c d e t w x y z A B C D E a b c d e T W X Y Z t w x y z T W X Y Z
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10. PROBLEM 1 A B C d e T W X Y A B C D E T t w x y z t w x y z
Crossing Over of d&e genes on Dad
Deletion of Z gene on Dad
Inversion of W&X genes on Dad
Duplication (Addition) of E gene on Mom
Translocation of T gene on Mom
Nondisjunction of t-z chromosome on Mom A B C d e T W X Y A B C D E T t w x y z t w x y z