At least in a specific experimental context and with specific animal models. When they mixed the embryos of a frog and an axolotl, there were no genes in their genome which could predict whether a "frogolotl" will have legs.
That's been reiterated by Levin at almost every presentation. Maybe he's overgeneralizing or there's actually a lack of specific experimental context or reference to a specific study. Maybe "anatomy" is a bit too broad of a term, and the thing inferred is some overall macroscopic patterning, so can't say definitely "untrue", as I haven't yet dedicated time to delve into specific articles and been just consuming lectures/presentations.
But I remember he was mentioning some study in left/right asymmetry in DevBio, where they've shown that it's cell potentials/bioelectric signalling and not genes that determine the left/right asymmetry in embryos.
thaumasiotes|1 year ago
You do realize this is untrue?
spacetimeuser5|1 year ago
But I remember he was mentioning some study in left/right asymmetry in DevBio, where they've shown that it's cell potentials/bioelectric signalling and not genes that determine the left/right asymmetry in embryos.