[ExI] biology term

[William Flynn Wallace]

Is the protection against tuberculosis active where there is
heterzygosticity, or only when the person has two copies and thus Tay
Sachs?  I guess the same question pertains to sickle cell anemia and
malaria.  Anybody know?

bill w

On Wed, Oct 12, 2016 at 3:52 PM, spike <spike66 at att.net> wrote:

>
>
> -----Original Message-----
> From: extropy-chat [mailto:extropy-chat-bounces at lists.extropy.org] On
> Behalf
> Of rex
>
>
> There are several terms for it.
>
> https://en.wikipedia.org/wiki/Balancing_selection
>
> I suspect it's more common than is generally recognized.
>
> -rex
> --
> "You do not examine legislation in light of the benefits it will convey if
> properly administered, but in light of the wrongs it would do and the
> harms
> it would cause if improperly administered." --Lyndon B. Johnson
>
> _______________________________________________
>
>
>
> Thanks Rex.  You and Stathis identified it as heterozygote advantage.  I
> thought there was a more specific term for that concept, but this states
> the
> notion:
>
> https://en.wikipedia.org/wiki/Heterozygote_advantage
>
> OK cool, so if we identify a bunch of these heterozygote advantages, then
> we
> could use CRISPR to induce the mutant copy widely.  Then when couples with
> the mutation mate, a heterozygous embryo is chosen, then the result is a
> healthier population (even though not one which can reproduce haphazardly.)
>
> spike
>
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