Professional Writer of Profiles, Science, Food, Entertainment and Business
All banner images were taken by Carma Spence. They rotate randomly.

Chromosome Abnormalities

sm4aWhat are chromosomes?
Chromosomes are the structures that hold our genes. Genes are the individual instructions that tell our bodies how to develop and function; they govern our physical and medical characteristics, such as hair color, blood type and susceptibility to disease.

Each chromosome has a p and q arm; p is the shorter arm and q is the longer arm. The arms are separated by a pinched region known as the centromere.

Continue reading at genome.gov