Down Syndrome Down syndrome is a birth defect caused by a genetic disorder that affects 350,000 people in the conjugated States. It is caused by abnormalities in the genes and is not inherited, meaning that p arnts do not pass this onto their children. Genetics is the study of heredity or how certain(a) traits are passed from parents to their children. Genes are the basic unit of heredity. Cells are the edifice blocks of your trunk and each one of us has more than speed of crystalize trillion kiosks. Our genes are located in chromosomes. Each booth in your body contains 46 chromosomes or 23 pairs. In a person with Down syndrome, there are 47 chromosomes.
In 1956, a French researcher named Jerome Lejeune used a new powerful microscope to view human strands of DNA. DNA is what holds an private persons genes. He studied these DNA strands and determined that there is an extra strand in chromosome 21, which is now called Trisomy 21 tri meaning three and somy for the word chromosome meaning three...If you want to posture a full essay, order it on our website:
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