South America, Australia, Liam discussed on Special Programming

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This is it yeah i i guess it's it's enclosing beyond literally on the nipple 's for months and so it's basically creating a womb like spikes was these fantastic slower as when the sort of the the spaniards and portuguese went off and discovered marsupials both in south america and australia that was all sorts of these fantastic theories that the young pills were born in the pouch and that was even this idea caught on so the mother before she gives birth six ahead in a pouch gives it a sort of which may help youngsters get into people started thinking the the female kangaroo may sneeze the fetuses into a pouch so that was lots and lots of confusion and it wasn't really resolved until the late nineteenth century early twentieth century how birth or what another unique feature liam to mammals is the placenta what's so important about the placenta the center is a is a fascinating old idea i remember big genuinely shocked when my children were pulling the size of this walker followed them out in a sort of think the president is going to this small structure elizabeth taylor pipe solid flesh and so the thing about placentas and when i first gloves that my full of children i kind of looked them if i were these sort of the netherlands maternal structures that have nourished my children when you're actually known about it the developing mammal for central novel dedicates a huge amount of its initial resources to making this sort of life rob and then essentially attacks the mother like view of pregnancy was completely turned on its head researching this book and says basically a fetal structure which borrows in utah bull and then is basically designed to gather as much nutrients and sustenance for the fetus as possible and the mother can i stand up resisting this and there's this whole theory of how the percenter shaped by jeans heritage from the father so ninety percent of mammalian species and certainly the original mammals would it be might this the fathers had nothing to do with offspring they sort of made it a month left and went off looking football females but left behind was that gps and so that genes could program the placentas is sort of ruthlessly try and take as much resources for the mother as possible for the.

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