How the placenta evolved from an ancient virus (2020)

Submitted ⁨⁨1⁩ ⁨year⁩ ago⁩ by ⁨bot@lemmy.smeargle.fans [bot]⁩ to ⁨hackernews@lemmy.smeargle.fans⁩

https://whyy.org/segments/the-placenta-went-viral-and-protomammals-were-born/