Genetics

             Genes are small pieces of biochemical inside cells. When a couple has children the child will receive a mixture of genetics from both the mother and father. There are tens of thousands genes and arranged 46 chromosomes. Genes control the growth of our body. It also determines the color of hair and the color of eyes and body chemistry. People that want to have a baby can be check to see if they have genes that could harm the baby. During a pregnancy genetic testing can be done to check the fetus. It also can tell if either side of the parent's families that may have a harmful disease that can be given to the baby. .
             Geneticists are trying to understand the information encoded in the genes. How genes are controlled by cells and handed from generation to generation. Geneticists are wondering how a tiny interruption in a gene can cause organisms or disease. Genetic Engineering is a deliberate effort to develop kinds, and strains, of organisms that would benefit human beings. Scientists proved that genes are made of a chemical called deoxyribonucleic acid (DNA). DNA molecules are big compared to most other molecules. DNA molecules are made up of many smaller molecules. When cell divides the DNA reproduces. The new cells are just like it was before it split. The new cells have the same genetic information that it had before it split. Even though humans have the same genes individuals may inherit different genes, which is what make each person unique. Each new organism resembles its ancestors, and yet it differs from them. Children may look like one parent or another, but usually they have some characteristics of each. Each human seems to be a mixture of traits. Some can be recognized in members of the family, while others seem to be new. .
             Genetics is a branch off of biology. It includes the study of heredity, which is how offspring resemble their parents outwardly as well as in their blood types and other physical characters.