In article <Pine.SUN.3.91.950418105905.7610E-100000 at cnj.digex.net>,
mintz at CNJ.DIGEX.NET (Cliff Mintz) wrote:
> On 18 Apr 1995, TAnwar wrote:
>> > I believe that the Dwarfism might be a Dominant trait. Therefore both
> > parents would have the alleles for Dd X Dd, and therefore 1/4 possibility
> > for dd (non-Dwarf).
> >
> >
> I am not a eukaryotic geneticist but I recently heard a piece on
> dwarfism on NPR and Tanwar is right. The DD genotype is lethal
> consequently, all dwarfs are heterozygous and can bear children that are
> not dwarfs.
>Achondroplasia, a form of inherited dwarfism is autosomal dominant. Like
most dominant mutations it is generally homozygous lethal. However, a few
rare escapers have been observed. The physical findings are more severe
than the heterozygote.
--
-Rich
Friedman at mbcl.rutgers.edu
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