1nondisjunction
The failure of a chromosome to separate during anaphase of cell division.
2Down syndrome
A condition in humans caused by an extra chromosome 21.
3Turner syndrome
A condition in humans in which females have only one X chromosome.
4nondisjunction
The failure of a chromosome to separate during anaphase of cell division.
5Down syndrome
A condition in humans caused by an extra chromosome 21.
6Turner syndrome
A condition in humans in which females have only one X chromosome.
7sex-linked gene
A gene that is only located on one of the two sex chromosomes.
8linked genes
Genes that are physically located near each other on the same chromosome.
9recombination
A process in prophase I in meiosis when each chromatid can break at the chiasma and then connect to a non-sister chromatid. Also known as crossing over.
10maternal inheritance
A type of inheritance in which the organelles in the offspring cells derive from those in the mother.
11paternal inheritance
A type of inheritance in which the organelles in the offspring cells derive from those in the father.