Lecture 7 Flashcards
1
Q
Aneuploidy
A
2n+/- x chromsomsomes
2
Q
Monosomy
A
2n-1 chromosomes
- I pair of chromosomes doesn’t separate correctly in either meiosis I or meiosis II
3
Q
Disomy
A
2n
4
Q
Trisomy
A
- 2n+1
- I pair of chromosomes doesn’t separate correctly in either meiosis I or meiosis II
5
Q
Autopolyploidy
A
Multiples of the same genome
6
Q
Allopolyploidy
A
Multiples of closely related genomes
7
Q
haploinsuffienciency
A
- When nondisjunction occurs, leading to monosomy, and one copy of a gene is not enough for survival, so the organism dies/doesn’t make it
8
Q
Euploidy
A
Multiples of n
9
Q
Diploidy
A
-2n
10
Q
Polyploidy
A
3n, 4n, 5n, etc
11
Q
Terminal Deletion
A
- Part of a chromosome breaks off and is lost
12
Q
Intercalary Deletion
A
- When the chromosome is bending/twisting, it breaks in two different places, resulting in three different pieces. When ligating the pieces back together, the middle piece gets left out, so the two end pieces come back together, but the middle piece is lost
13
Q
Paracentric inversion
A
- Can lead to the rearrangement of gene sequence on a chromosome
- This is a type of inversion in which the centromere is NOT a part of the inversion. Occur when both breaks are in the same arm of the chromosome
14
Q
Pericentric inversion
A
- Can lead to the rearrangement of gene sequence on a chromosome
- This is a type of inversion in which the centromere IS a part of the inversion
15
Q
Translocation
A
-When a chromosomal segment goes to a new place in the genome
