3 ms·
IIRC from some long-ago bio courses, the Y chromosome also shares fragments via copying mistakes, but what tends to happen over time is that they "migrate" off
by cauterized 11y ago
IIRC from some long-ago bio courses, the Y chromosome also shares fragments via copying mistakes, but what tends to happen over time is that they "migrate" off the Y chromosome entirely, further shrinking it.
- pygy_ 11y agoForm my own memories of long-ago courses, the Y chromosome is partially homologous to X and exchanges alleles with it during meiosis. It has its own, non-homologous region too that doesn't trade DNA.