Chromosome

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It is found in the nucleus of cells. Packed inside of it is DNA also called histones. Histones support the chromosome structures. DNA carries a specific code that gives instructions to our body. There are 46 chromosomes in most cells in the body. 46 chromosomes come in 23 matching pairs. During reproduction each parent gives 23 chromosomes to the baby. In cells for sexual reproduction like eggs or sperm, each cell only has half of the parent organism's genetic material.  Every time a cell divides, the chromosomes inside are replicated. At the center of the chromosome, joining the two arms, is called the centromere. The centromere is the part of a chromosome which separates the two arms. The short arm is called the 'p' arm; the long arm is called the 'q' arm. =====