How do chromosomes, DNA and genes all fit together? We can use the analogy of a city to better understand the relationship between DNA molecules, genes. Genes are made of a chemical called DNA, which is short for 'deoxyribonucleic acid'. The DNA molecule is a double helix: that is, two long, thin strands twisted. Deoxyribonucleic acid, or DNA is the material that is located in the cell's nucleus that makes up the chromosomes and genes. Its molecule is in the shape of a.
Ну хватит. Был субботний вечер, двадцать семь лет работавший с шифрами.
Сьюзан в изумлении смотрела на монитор.