A collection of my feeds from around the web and other random thoughts of mine.

Friday, July 7, 2017

RT @Ancestry: Happy 155th birthday, Nettie Stevens, who discovered X and Y chromosomes determine gender: http://ift.tt/2tpPRmb https://t.co/4oIZ3qG0Nd

from Twitter https://twitter.com/deabigt

July 07, 2017 at 10:55AM

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