Psych M.D. – Chromosomes




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Term: Chromosomes
Definition (Myers): threadlike structures made of DNA molecules that contain the genes
Definition (alternative): A chromosome is an organized structure of DNA and protein that is found in cells. A chromosome is a single piece of DNA that contains many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions. *
Contextual explanation: It is well known that DNA (deoxyribonucleic acid) is the blueprint of life. DNA provides the codes for the structural and enzymatic proteins that make up every cell. DNA is packaged into units called chromosomes. The chromosome number varies in different species. In humans there are 46 chromosomes, or 23 pairs of chromosomes (diploid), in every cell except the mature egg and sperm which have a set of 23 chromosomes (haploid). If the chromosomes in a single cell were stretched out and laid end to end, the DNA would be two meters long.
Related terms and concepts:
chromosome structurePsych M.D. – Chromosomes - The Neuron
Related websites:
Edited by: Patrick



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