Chromosome. Definition

Medical Definition: Chromosome

Corpuscle elongated filament or intracellular deoxyribonucleic acid condensate, associated with proteins, and comprising a linear array of functional units known as genes. It is visible in the nucleus of cells during mitosis. Their number is constant for each animal or plant species. It's part of the cell that contains genetic information. Except for sperm and eggs, all human cells contain 46 chromosomes (23 pairs). Their number varies from a minimum of one chromosome in the workers of the ant Myrmecia pilosula to the 1,260 chromosomes (630 pairs) recitulatum Ophioglussum fern.

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