Q for biologists: if we have two kidneys for redundancy, why don't we have two hearts?
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Replying to @DanielleFong
@DanielleFong the real question is "why do we have 2 kidneys" since we have only a single copy of most organs. What's special about kidneys?1 reply 0 retweets 1 like -
Replying to @DanielleFong
@DanielleFong lungs and eyes are a good point. Losing half your brain is not survivable. But stomach/liver/spleen/throat/gall bladder...4 replies 0 retweets 0 likes
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