- #1

Qube

Gold Member

- 460

- 1

This IS wrong. This only holds true if one of your parents is HETEROZYGOUS dominant.If one of your parents has Huntington's disease, you have a 50% chance of getting the gene for the disease.

Hh x hh => 50% chance of offspring having Huntington's disease.

However, if one of your parents is HOMOZYGOUS DOMINANT ..

HH x hh => 100% chance of offspring having Huntington's diseases.

Simple Punnett squares will verify the above.

**Therefore, the probability should be 75% if one parent has Huntington's disease.**Am I right?