DNA testing clinical testing to diagnose a person's genetic status or to determine a person's susceptibility to one or more genetic diseases or disorders. Some eugenicists have supported the sterilization of individuals believed to possess inferior genes. The scientific term for fraternal twins is dizygotic twins. Genes are arranged linearly along each chromosome. The inserted DNA may replace, stimulate or suppress the defective gene, or it may produce substances that stimulate the body's immune system.
Counseling is done by a trained genetic counselor or medical geneticist.
Human Genome Diversity Project a collaborative research effort to investigate the variations in genetic material in human populations worldwide. Human Genome Project an international research initiative to map and sequence the entire human genome. Identical twins, which are always of the same gender, have the same genetic makeup. The scientific term for identical twins is monozygotic twins. Geneticists use markers to help pinpoint the location of genes they are seeking.