Y chromosome 
noun Genetics
(In humans and other mammals) a sex chromosome which is normally present only in male cells, which are designated XY. Compare with X chromosome.If a gene on the Y chromosome mutates, that piece of the male genetic code may disappear....
- Genes in the second group are expressed exclusively in testes and form gene families on the Y chromosome.
- Bone marrow derived cells were identified by the presence of the Y chromosome, ordinarily found only in males.
- Alexandra fly
- Alexandra fringe
- Alexandra limp
- Alexandra palm
- Alexandretta
- Alexandria
- Alexandrian
- Alexandrianism
- alexandrine
- Alexandrine parakeet
- Alexandrinism
- alexandrite
- Alexandropol
- alexeteric
- alexia
- Alexian
- alexic
- alexin
- alexipharmac
- alexipharmacal
- alexipharmacon
- alexipharmacum
- alexipharmic
- alexiteric
- alexithymia