Down Syndrome Sometimes when meiosis ( the division of reproductive cells ) occurs, chromosomes whitethorn be lost, left behind, or too many may be passed on, resulting in the birth of a child with a genetic or congenital defect or disease. peerless of the most common of these genetic dis distinguishs is Down syndrome. This dis cast takes its appellation from Dr. Langdon Down, who was the first to describe it formally, in 1866. Down syndrome is a urge on marked by abnormal physical and mental organic evolution that is caused by a genetic defect. This genetic defect is caused by an wasted chromosome.
Peopl e born with Down syndrome have 47 chromosomes compared to the normal amount of 46, 23 chromosomes inherited from each parent. This bare chromosome originates more often in the mothers egg than the fathers sperm. Chromosomes are individual, stupid DNA molecules in a cell nucleus. They contain the genes on with structures that hold the DNA and aid it in expressing heredity by orchestrating cellular operati...If you want to get a full essay, order it on our website:
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