Y chromosome has two types of polymorphism : metacentric ( or submetacentric ) and acrocentric chromosomes.
染色体有中部 ( 或亚中部 ) 和近端着丝粒染色体.
互联网
Y - chromosome is a middle - sized acrocentric .
Y为 中型 近端着丝粒染色体.
互联网
The X chromosomes were all submeta - centric and the Y chromosomes were acrocentric in five breeds.
X染色体均为近中着丝粒染色体,Y染色体为近端着丝粒染色体.
互联网
"an acrocentric chromosome"