Not quite like that so what I mean is chimera occurrs when two siblings merge into one but have 2different pheno types day one siblings was banana and the other was normal something occurs during where maybe the zygote of one egg ends up bonding/consuming half of the other egg creating the rate anomaly especially in snakes I think it would only happen if it was in an egg that was going to have twins (?) It happens in dogs and cats though as well.
What I was curious was could their be 2 different strands kind of like how a human found out that a kid wasn’t their kid during a genetic test only to figure out he was a chimera genetically and the kids actually came from his brothers DNA that was consumed. Something along those lines but just remembering biology classes ^^