TIL As opposed to having XY chromosomes (found in mammals), birds, some fish, crustaceans, and insects have ZW system, where males typically have ZZ and female ZW chromosomes. en.wikipedia.org Submitted by StoryAndAHalf t3_yh1qi1 on October 30, 2022 at 1:59 AM in todayilearned 9 comments 159
RetroMetroShow t1_iubomyx wrote on October 30, 2022 at 2:26 AM Always knew there was something fishy about ZZTop Permalink 12
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