I would like to comment a bit further on the subject of the development pattern of an egg that has had the genes replaced by those of a different species. From your comments, I gather that the morphology of this egg development is not monitored by genes. Have I understood it correctly?
I have been intrigued by the organization of unicellular beings, like some algae, into colonies, that develop specialization, and therefore seem to be a precursor of pluricellular beings. Now, I compare both phenomena, and ask. Could this association and specialization have also nothing to do with genes? What is your opinion?
I will appreciate your comments