Aside from particular cells (as an example, semen and egg cells and blood that is red), the mobile nucleus contains 23 pairs of chromosomes. A chromosome contains numerous genes. A gene is just a portion of DNA providing you with the rule to make a protein.
The DNA molecule is a lengthy, coiled dual helix that resembles a staircase that is spiral. Inside it, two strands, consists of sugar (deoxyribose) and phosphate particles, are linked by pairs of four molecules called bases, which form the actions of this staircase. When you look at the steps, adenine is combined with thymine and guanine is paired with cytosine. Each couple of bases is held together by way of a hydrogen relationship. A gene consist of a series of bases. Sequences of three bases rule for an amino acid (amino acids will be the blocks of proteins) or any other information. 阅读更多