vet-tech-therio-ch-4-definitions

Diploid

normal number of chromosomes in a cell (homologous pairs of chromosomes)
Heteroploidy

any deviation from the diploid number
Haploid
- half the number of chromosomes
- i.e. germ cells - have one of each of the homologous pairs of chromosomes
Polyploids

whole multiples of the haploid number
Triploidy
- three times haploid number
- eg cats have 38 haploid, so 57 is triploid (38 + 19)
Tetraploidy

four times haploid number
Aneuploidy

cells which have a few chromosomes more or less than diploid
Euploid

normal number of chromosomes
Monosomy
- one of a homologous pair of chromosomes is missing
- eg most common is absence of one X chromosome
Trisomic

a cell with an extra chromosome of a homologous pair
Mixoploid

some normal cells and some cells with a chromosomal abnormality
Mosaic

mixture of cells that comes from one original cell line
Chimera

mixture of cells derives from two cell lines

Author

darlene.m.nelson

107588

Card Set

vet-tech-therio-ch-4-definitions

Description

vet tech theriogenology chapter 4 cytogenetics definitions sheet set

Updated

2011-10-09T22:57:43Z