• The bull Y chromosome has evolved to bully its way into gametes

    14 days ago - By Phys

    In a new study, published Nov. 18 in the journal Genome Research, scientists in the lab of Whitehead Institute Member David Page present the first ever full, high-resolution sequence of the Y chromosome of a Hereford bull. The research, more than a decade in the making, suggests that bulls' Y chromosomes have evolved dozens of copies of the same genes in a selfish attempt to make more males-a move that is countered in the female-determining X chromosome.
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