allosome
nounUK /ˈal.əˌsəʊm/ · US /ˈæl.əˌsoʊm/
Etymology From allo- + -some.
1
Biology, Genetics, Medicine, Natural sciences, Sciences A sex chromosome that differs from an ordinary autosome in form, size, or behaviour.
- The human sex chromosomes are a typical pair of allosomes. The X chromosome is present in the ovum, while either X or Y chromosomes can be present in sperm.