Genes

Genes are found in all cells of the body. They’re like chemical codes that determine a person’s physical traits. Genes determine a person’s height, skin color, eye color, blood type, and many other things. To see if people with the same genes had about the same...

Genes

Genes are found in all cells of the body. They’re like chemical codes that determine a person’s physical traits. Genes determine a person’s height, skin color, eye color, blood type, and many other things. To see if people with the same genes had about the same...