New research shows how the male X chromosome is silenced in some types of cancer. Experts explain why this happens and what to know.

While all forms of Down syndrome are associated with an extra full or partial copy of the 21st chromosome, there are a few different types of the condition. Those types are: ...

New findings on chromosome changes in tumor cells Date: November 10, 2010 Source: Lund University Summary: New progress has been made on the road to understanding the origins of genetic changes in ...

Schoolchildren learn in Biology 101 that most human cells have two sets of 23 chromosomes — one from the mother and another from the father. The only exceptions are reproductive cells from sperm ...

Cincinnati Children's Hospital Medical Center study links regions of two chromosomes to susceptibility for a type of autism characterized by regression in development.

In fact, one of the earliest methods used to study human chromosomes - Giemsa staining, which yields signature banding patterns for each of the 24 types of human chromosomes - is still in use today.

No abnormality of chromosome number was present in any of the patients with constitutional aplastic anemia except for the occurrence in some of a few cells with a specific type of polyploidy known ...