Basic Structural Units For Every Human Body Essay

883 Words Oct 22nd, 2015 4 Pages
In every human body, there are basic structural units for every organism called cells. In every cell, there is a nucleus, which contains genetic information that is stored in genes. Genes carry the data needed for our inherited traits, and are grouped by chromosomes. Everyone has 46 chromosomes, 23 from the mother, and 23 from the father. In 1 in about 700 babies born, there is a congenital disorder that creates an extra portion or copy of the 21st chromosome. This disorder is called Down syndrome. It is the most commonly occurring chromosomal condition. People who are born with Down syndrome usually have a flat face ,Protruding tongue, Upward slanting eyes, Unusually shaped or small ears, Poor muscle tone, Broad, short hands with a single crease in the palm, Relatively short fingers and small hands and feet,Excessive flexibility, Tiny white spots on the colored part of the eye, Short height,and a short neck. they also might have intellectual disabilities (A.K.A. mental retardation) to some degree. It varies from person to person, but it usually is mild to moderate in most cases.

The risk of having a baby with down syndrome is higher if you are older than 35, or if a sibling has it. There are 3 main different types of Down syndrome;Trisomy 21, the most common case, is when the pair of 21st chromosomes fail to separate, the embryo develops and the extra chromosome is replicated in every cell. Then there is Mosaicism, which is diagnosed when there are 2 different types of…

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