Re: Color system

Hello!

On Sunday 17 October 2004 07:10, Ben Poplawski wrote:

 > Which brings me to this: I don't think you can get
 > colorblindness from your father unless you're female.
 > Colorblindness (AFAIK) is an X-linked condition; that is,
 > it's transmitted by X-chromosome and therefore impassable
 > from father to son.

So I have it from my mother. Or both of my parents have got
it recessive, since none of both is colour blind, but me
and my brother are. My sister is not colour blind however.

 > Girls are luckier here; they need two defective
 > chromosomes to become colorblind. One from their mother,
 > one from their father. Therefore, statistically there are
 > fewer colorblind females than males.

Right. When I wrote that, I thought colourblindness is on
the Y chromosome, but indeed, it's on the X chromosome of
which (human) females have two and males only have one. So
the chances for men to get colourblindness are higher than
for females where the defective parts of one chromosome can
be "repaired" by help of the "sane" chromosome.



On Sunday 17 October 2004 20:06, Rodlox wrote:

 >  how do rainforest tribes in real life handle that?  (or
 > do the Ayeri live in a rainforest that's greener than any
 > on Earth?).  *curious*

lol! No, I guess. I only have decided that they live in a
huge part of the tropical rainforests of the eastern
continent (still unnamed) of my conplanet Aréca (that it
starts with [a] as well is just coincidence, but indeed I
like the sound of /a/ very much).

Carsten ... 180 mails to go :-| ... I'm coming!

--
Eri silveváng aibannama padangin.
Nivaie evaenain eri ming silvoieváng caparei.
- Antoine de Saint-Exupéry, Le Petit Prince
  -> http://www.beckerscarsten.de/?conlang=ayeri