How are genes used for a particular trait

Each gene has a special job to do ... Like chromosomes, genes also come in pairs. Each of your parents has two copies of each of their genes, and each parent passes along just one copy to make up the genes you have. Genes that are passed on to you determine many of your traits, such as your hair color and skin color.

A scientist who tries to determine how the differences in a particular personality trait are correlated with differences in a particular gene, using the molecular genetics method. Molecular genetics is a variety of research techniques that scientists use to learn about how genes are associated with which personality traits. Molecular genetics deals with the makeup and functions of genetic material at the is molecular level.