One-hundred-forty-four human X chromosome genes had no counterparts in mice.

人类X染色有144组因不同于老鼠。

A genome is the haploid set of chromosomes in a gamete, or microorganism, or each cell of a multicellular organism.

因组是指配子、微生物或多细生物每个细单倍染色组。

They have their own genomes too, separate from the main set of chromosomes in a body cell's nucleus.

它们也拥有自己因组，独立于细核内主要染色组。

They've got extra sets of chromosomes.

他们有额外染色组。