Chromosomes意思

"Chromosomes" are structures found in the cells of all organisms that contain the genetic material, DNA. They are made up of proteins and DNA, and come in pairs. Humans have 23 pairs of chromosomes, with one member of each pair coming from the mother and the other from the father. Chromosomes carry the genes, which are segments of DNA that code for specific traits. During cell division, chromosomes replicate and separate so that each new cell gets a complete set of chromosomes.