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This DNA is shared across species and seems 'so important it can't change,' researcher says
This is the first clear evidence that suggests our ability to produce sperm is very ancient, probably originating at the dawn of animal evolution 600 million years ago.
Originally posted by Totalstranger
hell if people were around THAT long we'd have evolved to be able to impregnate ourselves, screw all the talk and pretending you like watching Friends reruns
Originally posted by zroth
If the gene hasn't changed in 600 million years? How old is humanity.
Originally posted by Arbitrageur
Originally posted by zroth
If the gene hasn't changed in 600 million years? How old is humanity.
You're implying things that aren't in the article.
Think of the sperm that have been around for 600 million years like a little "space shuttle".
The space shuttles have empty cargo bays that you can put different payloads into. The Hubble Space Telescope was one payload, other payloads have included other satellites.
In the sperm analogy, the payload could be human DNA, Chimp DNA, Bonobo DNA, etc. So the shuttle or sperm, delivery mechanism is the same, but the payload (genetic package) inside is different.
At least that's how I read it. So just because human type sperm have been around for 600 million years, doesn't mean that humans have been around for 600 million years.