chromosome, n.All

No Y chromosome genes from neanderthals exist, suggesting that all human-neanderthal hybrids were female. The leading theory is that the Y Neanderthal chromosome triggered immune responses, causing miscarriages.

A Chromosome is a skein of DNA

A certain type of fern has by far the most chromosomes of any living thing on Earth (1260 compared to 46 for a human).

A Chromosome is a library

Potatoes have more chromosomes than humans.