Biotechnology and Genetics terms starting with X

15 terms

1. x The basic number of chromosomes in a polyploid series, monoploid/haploid = x; diploid = 2x; triploid = 3x; etc.
2. X chromosome See: sex chromosome.
3. X inactivation The normal inactivation of one of the two X chromosomes in females.
4. X-linked The presence of a gene on the X-chromosome.
5. X-linked disease A genetic disease caused by a mutation on the X chromosome. In X-linked recessive conditions, a normal female "carrier" passes on the mutated X chromosome…
6. X-ray crystallography The diffraction pattern of X-rays passing through a pure crystal of a substance.
7. xanthophyll A yellow oxygen-containing carotenoid, present in chloroplasts.
8. xenia The immediate effect of pollen on some characters of the endosperm.
9. xenobiotic A chemical compound that is not produced by, and often cannot be degraded by, living organisms.
10. xenogeneic Refers to organ s, genetically engineered ("humanized") todecrease the chance of rejection, that have been grown in an animal of another species for…
11. Xenograft The cells of one species transplanted to another species.
12. Xenotransplantation The transplantation of tissue or organs from one species to another species, typically from pigs to humans. Zoonoses are an important issue.
13. Xenotransplantion A transplant of tissue from an animal of one species to an animal of another species.
14. xerophyte A plant very resistant to drought, typically adapted to extremely dry environments.
15. xylem A complex tissue specialized for the conduction of water and mineral nutrients in solution.