Urinary 17-ketosteroid excretion was 10.2 mg. per 24 hours ... Two types of accident that will result in a mosaic of cells with different chromosome numbers may occur (Fig. 4).

Mosaic Down syndrome is a variant of Down syndrome. Down syndrome is a congenital (present at birth) genetic condition that occurs when a person has three copies of chromosome 21 instead of two ...

Could two pieces of a stone mosaic ever be identical? Of course, the answer is no--and each stone’s variation subtly contributes value to the finished work. Why should your cells be any different?

The third section on medical consequences discusses the impact of female X chromosome mosaicism. Migeon explains how mosaicism provides two cell populations whose proportions can vary by chance or ...