- Structure found in the nucleus of a cell, which contains the genes. Chromosomes come in pairs, and a normal human cell contains 46 chromosomes.
Definition from: Human Genome Project Information
at the U.S. Department of Energy
structure consisting of DNA and supporting proteins called chromatin. Human
cells normally contain 46 chromosomes identified as 23 pairs; 22 pairs are
autosomes and one pair are the sex chromosomes
Definition from: GeneReviews
from the University of Washington and the National Center for Biotechnology Information
- A chromosome is an organized package of DNA found in the nucleus of the cell. Different organisms have different numbers of chromosomes. Humans have 23 pairs of chromosomes--22 pairs of numbered chromosomes, called autosomes, and one pair of sex chromosomes, X and Y. Each parent contributes one chromosome to each pair so that offspring get half of their chromosomes from their mother and half from their father.
Definition from: Talking Glossary of Genetic Terms from the National Human Genome Research Institute
Related discussion in the Handbook
See also Understanding Medical Terminology.