TIL Since female dairy cows are much more valuable than bulls we use machines to sort bull semen into male vs female semen. These machines work based on the fact that XX semen have more DNA than XY, and thus greater mass, and can be automatically discriminated when colored with florescence.

TIL Since female dairy cows are much more valuable than bulls we use machines to sort bull semen into male vs female semen. These machines work based on the fact that XX semen have more DNA than XY, and thus greater mass, and can be automatically discriminated when colored with florescence.

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