The nucleus of each human body cell contains 46 chromosomes. Each chromosome contains about 1000 genes. There is enough DNA in all the cells in a human body to stretch to the sun and back again ...

At different times during the life cycle of a cell, the DNA that makes up the cell's chromosomes can be tightly compacted into a structure that is visible under a microscope, or it can be more ...

The cell's nucleus contains chromosomes. These are long threads of DNA, which are made up of many genes. Humans have around 25,000 genes across their 23 pairs of chromosomes.

Chances are you've seen an illustration of DNA's double-helix structure and even pictures ... of the genome are an estimated 70,000 genes. The single chromosome displayed here and those on the ...

Chances are you've seen an illustration of DNA's double-helix structure and even pictures of the chromosomes that ... to 15 different levels to see DNA's relationship to us as a whole.

Here, you will find information on the chemical structure of DNA; details about the organization of DNA into chromosomes, genes, and gene families; and data regarding important categories of ...