What do male karyotype chromosomes in an HD patient look like - graphic - compared to a non-HD patient

The genetic abnormality in HD is found on the fourth chromosome (4p16.3), and three bases arranged along a particular stretch of this chromosome occur in a repeated sequence known as a CAG repeat. The gene is called IT15, or 'huntingtin'. Research into HD has found that an excess number of these repeats leads to the disease. Typically more than 35 repetitions of the CAG sequence is associated with HD although people with up to 39 repeats might not have the disease.

CT image from a patient with Huntington's Chorea, showing degeneration of the caudate nuclei. Well, OK?

I spent way too much time on Google.

I can tell  you that there is no difference between the male and the female karyotype because the genetic abnormality does not involve the X chromosome.

I am guessing that there would not be any visual difference because there is no breakage, non-disjunction, duplication, etc.

Jay

I don't think anyone could have answered that question better than Jay.