GEN Lecture 6 Flashcards
1
Q
Heterogametic sex:
A
The sex that produces two kinds of gametes and determines the sex of the offspring.
2
Q
Homogametic sex
A
The sex that produces one kind of gamete.
3
Q
Meiotic non-disjunction in meisosis 1:
A
homologous pairs don’t separate
4
Q
Meiotic non-disjunction in meiosis II:
A
Chromatids dont separate.
5
Q
Trisomic:
A
1 extra chromosome
6
Q
Monosomic:
A
1 less chromosome
7
Q
Nullisomic:
A
lack both chromosomes
8
Q
Polyplody:
A
More than 2 complete chromosome sets e.g. triploid 3n and tetraploid 4n.
9
Q
A deletion:
A
Removes a chromsomal segment
10
Q
Duplication:
A
Repeats a segment
11
Q
Inversion:
A
Reverses a segment within a chromOsome.
12
Q
Translocation:
A
Moves a segment from one chromosome to another nonhomologous chromosomes.
13
Q
Turners syndrome:
A
XO
14
Q
Klinefelters syndrome:
A
XXY
