Genetics question.....

Jim Loats loats1 at fas.harvard.edu
Tue Apr 11 09:35:46 EST 1995


ajmst37 at vms.cis.pitt.edu writes:
>hello,

>I have a question regarding genetics.

>I was watching the show "Medicine Ball" tonite and was wondering about
>something.  Two dwarves had a child, and the father said that there was
>a one-in-four chance of the child being non-dwarf.  But if the parents
>are dwarves, does that not mean that they are both homozygous recessive?
>wouldn't this mean that there is no chance of the child being a non-dwarf?

>I'm only a sophmore in college, so I might just be undereducated on the
>subject.

As I understand it, dwarfism is a *dominant* trait, so if both parents 
were heterozygous the child would indeed have a 1/4 chance of being
non-dwarf (doing the Punnett square is left as an exercise for the
reader :^)

-- 
                     Jim Loats -- loats1 at fas.harvard.edu
                     Red meat isn't bad for you.  Furry, 
                       blue-green meat is bad for you.



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