Chromosomal Mutations ²

Question 1

• change in number or structure of chromosomes
• happens as result of chromosomes breaking during meiosis
• can occur in any organism, but not y in plants
• 5 types

Answer 1

Chromosomal mutations

Question 2

5 kinds of chromosomal mutations

Answer 2

1) delection
2) insertion/duplication
3) inversion
4) translocations
5) nondisjunction

Question 3

Loss of part of chromosome

Answer 3

Delection

Question 4

Part of a chromosome is repeated

Answer 4

Intersection / duplication

Question 5

Part of a chromosome breaks out and reinserts backwards

Answer 5

Inversion.

Question 6

Part of chromosome breaks off and attached to another chromosomes

Answer 6

Translocations

Question 7

During meiosis I, homologous chromosomes DO NOT separate . Result - too many or too few chromosomes in gamet

Answer 7

Nondisjunction

Question 8

XX

Answer 8

Female

Question 9

XY

Answer 9

Male