N-COUNT A Y chromosome is the chromosome in a man's cells which will produce a male baby if it joins with a female's X chromosome. Y chromosomes are associated with male characteristics. Compare . Y染色体
All Y chromosomes in existence today are descended from a single ancestor's who is thought to have lived about 140,000 years ago.
现在存在的所有 Y 染色体都来自于一个被认为生活在大约14万年前的同一祖先。
Amelogenin (AML) gene locates on the conservative region of the bovine X and Y chromosomes.
牛牙釉蛋白(AML)基因定位于牛x染色体和Y染色体上的同源区域。
However, in 2000, scientists announced that the X and Y chromosomes were once a pair of identical twins.
然而，在2000年，科学家曾宣布，X染色体和Y染色体曾经是同卵双胞胎。
应用推荐