[LMB] OT: Genetics & Culture

Eric Oppen ravenclaweric at gmail.com
Fri Nov 17 06:39:34 GMT 2017


If humans could synthesize their own Vitamin C, the Age of Exploration
would have been a lot easier.

On Thu, Nov 16, 2017 at 11:59 PM, baur baur <baur at chello.at> wrote:

>
> >
> >     M R Dolbear fm <little.egret at dolbear.fastmail.fm> hat am 17.
> November 2017
> > um 02:18 geschrieben:
> >
> >
> >
> >
> >     On Thu, 16 Nov 2017, at 23:22, Matthew George wrote:
> >     > No, the reason humans need dietary vitamin C is that for some
> unknown
> >     > reason our distant ancestors lost the enzymatic pathway to
> synthesize
> >     > it.
> >     > Other mammals can make it - indeed, one reason Native Americans in
> the
> >     > far
> >     > north didn't get scurvy is that they ate certain organs, or all
> their
> >     > meat,
> >     > raw. I vaguely recall one ethnologist discussing how after hunting
> a
> >     > moose
> >     > and butchering it for cooking and preservation, (I think) the
> adrenal
> >     > glands were carefully cubed and distributed raw to everyone in the
> >     > tribe.
> >     >
> >     > We survived despite losing the ability to make this essential
> nutrient
> >     > because our early diets were rich in it. But as far as anyone can
> >     > determine, there's no benefit to having lost it. Unlike the caecum
> or
> >     > the
> >     > vomeronasal organ, say. (We technically still have a vestigal,
> >     > nonfunctional version of both.)
> >
> >     > {NOT all} Other mammals can make it
> >
> >     Guinea pigs, Fruit eating bats can't.
> >
> >     https://en.wikipedia.org/wiki/Vitamin_C#Deficiency
> >
> >
> >     most bats,
> >
>
>
> just the fruit eating bats or the insectivore / sanguinivore too?
>
> Servus
>
> markus
>
> >
> >     all guinea pigs, capybaras, and the Haplorrhini (one of the two major
> > primate suborders, consisting of tarsiers, monkeys, and
> >     humans and other apes). Ascorbate is also not made by many species of
> >     birds and fish. All species that do not make ascorbate require it in
> >     the diet
> >
> >     --
> >     Little Egret by email
> >     Michael Dolbear in Walton-on-Thames
> >     --
> >     Lois-Bujold mailing list message sent to baur at chello.at
> >     Lois-Bujold at lists.herald.co.uk
> >     http://lists.herald.co.uk/cgi-bin/mailman/listinfo/lois-bujold
> >
> --
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