4 ms·
Pfft... Does too! I seriously wonder if it's something like a lump of skin or dirt that makes it go the opposite direction, or the direction of least resistanc
by KGIII 9y ago
Pfft... Does too!
I seriously wonder if it's something like a lump of skin or dirt that makes it go the opposite direction, or the direction of least resistance. Y'all busy looking at genes and stuff. I am gonna stick with simple.
It should be noted that my last bio course was well before the human genome was sequenced. I doubt they'd even done snails.
Yeah, I'm sticking with that. It's either that or aliens.
- gus_massa 9y ago>>> conservation of angular momentum thing For the snails, probably you mean something like "initial break of symmetry". In the initial steps of the embryo, it must define the front-back, top-down, right-left axis. (I'm not sure about the technical names.) IIRC, each one is defined by some gradient of chemical signal, they are not mechanical, but I'm not sure. https://en.wikipedia.org/wiki/Morphogenesis https://en.wikipedia.org/wiki/Morphogenesis Anyway, it would be a nice experiment to twist a snail embryo and see the development. In particular, the snail of the article has the reproductive and internal organs in the opposite side of most snails. What happens when you twist a snail embryo, do the internal organs get the mirrored position too??? Somewhat related: This explains some parts of the front-back axis "Evo-Devo (Despacito Biology Parody) | A Capella Science" https://www.youtube.com/watch?v=ydqReeTV_vk https://www.youtube.com/watch?v=ydqReeTV_vk