chromosome

chromosome
noun

(Biology)a thread-like structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes
(生)染色体
Each chromosome consists of a DNA double helix bearing a linear sequence of genes, coiled and recoiled around aggregated proteins (histones). Their number varies from species to species: humans have 22 pairs plus the two sex chromosomes (two X chromosomes in females, one X and one Y in males). During cell division each DNA strand is duplicated, and the chromosomes condense to become visible as distinct pairs of chromatids joined at the centromere. Bacteria and viruses lack a nucleus, and have a single chromosome without histones

派生
chromosomal
adjective
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