A Solution To Darwin's 'Mystery Of The Mysteries' Emerges From The Dark Matter Of The Genome
Monday, October 26, 2009 - 16:14
in Biology & Nature
Why do crosses between two species often yield sterile or inviable progeny (for instance, mules emerging from a cross between a horse and a donkey)? New research suggests that the solution to this problem lies in the "dark matter of the genome": heterochromatin, a tightly packed, gene-poor compartment of DNA found within the genomes of all nucleated cells.