DNA is packed into chromosomes, which form genetic information to make genes. Humans typically have 23 pairs of chromosomes or 46 chromosomes in total.. Apart from the nucleus, a small amount of ...

There are four types of base - adenine, thymine, cytosine and guanine. All human cells contain DNA. The 3 billion pairs of bases in each cell fit into a space that is six microns across.

While most known types of DNA damage are fixed by our cells’ in-house DNA repair mechanisms, some forms of DNA damage evade repair and can persist for many years, new research shows. This means ...

While most known types of DNA damage are fixed by our cells' in-house DNA repair mechanisms, some forms of DNA damage evade ...

While most known types of DNA damage are fixed by our cells' in-house DNA repair mechanisms, some forms of DNA damage evade repair and can persist for many years, new research shows. This means ...

The two most common types of twins ... the process of how and when the twin embryos form inside your uterus might vary ... resulting in two, identical babies. They share 100% of the same DNA.