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mercredi 3 août 2016
Triploid Oysters?
Here is the story:
TRIPLOID OYSTERS
on Hilton's Coast Seafoods Company
http://www.coastseafoods.com/triploid_oysters.html
OK, that takes care of my idea of mammals always staying diploid and not augmenting chromosome numbers by ploidy variations, right?
Wrong. Oysters are not mammals.
I am not sure why, but tetraploid (one ploidy more than triploid, four rather than three or the normal two chromosomes in EACH pair/group) mammals, at least some mammalian types, like human chromosome setup, will either spontaneously abort or - one boy - be born very sickly and die very quickly. I suppose it is the mother's immune system. Anyway, oysters aren't developing in placentas or uteri, so the triploid oysters don't have that problem./HGL
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Creation vs. Evolution : Letter to Nature on Karyotype Evolution in Mammals
RépondreSupprimerhttps://creavsevolu.blogspot.fr/2011/11/letter-to-nature-on-karyotype-evolution.html