Definitions Flashcards
1
Q
Nondisjunction
A
when homologous chromosomes or sister chromatids do not separate as they should during anaphase I or II of meiosis.
2
Q
Euploidy
A
the condition of having a normal number of structurally normal chromosomes.
3
Q
Aneuploidy
A
too few or too many chromosomes.
4
Q
Monosomy
A
one chromosome is lost (missing partner of a homologous pair) due to nondisjunction.
5
Q
Trisomy
A
the gain of an extra chromosome due to nondisjunction. Most commonly found in chromosomes 21, 18, and 13.
6
Q
Karyotype
A
Set of chromosomes an individual has.
