SG 7.5 Flashcards
1
Q
nondisjunction
A
incorrect # of chromosomes
2
Q
deletion
A
a part of a chromosome is missing
3
Q
duplication
A
one with more copies of a DNA segment is produced
4
Q
inversion
A
a segment breaks off and reattaches within the same chromosome but in reverse orientation
5
Q
translocation
A
a chromosome breaks and a portion of it reattaches to a different chromosome
6
Q
a normal gamete should have ____ of each chromosome
A
1
7
Q
a normal zygote should have ____ of each chromosome
A
2
8
Q
trisomy
A
cells are diploid except they have 3 copies of one chromosome type
9
Q
monosomy
A
cells are diploid except they have only 1 copy of a chromosome
10
Q
x-inactivation
A
an x chromosome is compacted to make a small, dense structure celled a barr body
