DNA Doesn't Tell Us

DNA Doesn't Tell Us (ＤＮＡは教えてくれない) is a shonen manga by Mintarou. It began its serialization in the Shonen Sirius magazine in 2016, and is complete in two volumes. Seven Seas has licensed it for an English release.

Plot
All around the world, animals are suddenly turning into humans! These newly minted humans must learn how to live with their new bodies and each other. To do this, some of them are sent to Animalium—an all-girls school specifically for this new species— and there, these girls will learn about themselves and each other.

Official
Official English site