Chromosomal variation Flashcards
1
Q
describe chromosomal variation
A
Chromosomal variation can happen naturally during meiosis as chromosomes tangle around each other or because of mutagens that damage chromosomes.
2
Q
describe chromosomal deletion
A
A region of a chromosome is lost resulting in the absence of all the genes in that area.
3
Q
describe chromosomal inversion
A
One region of a chromosome is flipped and reinserted.
4
Q
describe chromosomal duplication
A
A region of a chromosome is repeated, resulting in an increase in copies of the genes in that region.
5
Q
describe translocation
A
A region from one chromosome is aberrantly attached to another chromosome.
6
Q
what five conditions are translocation responsible for
A
- Burkitts lymphonia
- Schizophrenia
- Thyroid cancer
- Sarcoma
- several types of leukemia
