Antibodies bind to antigens, often produced by disease, and help the body fight against them. Antibodies can help the body to develop immunity to a disease. A strand of DNA that is not responsible for coding. The antisense strand serves as the template for RNA synthesis. Humans have 22 pairs of autosomes.
Bases are the letters that spell out genetic code.
There are more than 4,000 known birth defects, some of which are fatal. A birth defect may be caused by a faulty gene or by environmental factors during pregnancy, such as radiation exposure. Two mutant genes that are responsible for approximately 50 percent of all inherited forms of breast cancer. Normally these genes are tumor suppressors, which limit the growth of tumors. When mutated, these genes fail to do their job correctly, allowing cancers to grow.