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Down Syndrome Condition - Essay Example

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The paper aims to analyse the down syndrome condition. A gene is the smallest physical and functional unit of genetic inheritance. Genes contain a protein composition. Every living human being has two copies of each gene from the male parent and the female parent…
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Down Syndrome Condition
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"Down Syndrome Condition"

Trisomy 21 is the most common form of Down syndrome. It is a genetic disorder where an individual has 47 chromosomes in their cell composition instead of 46.Normally; a human being inherits 23 chromosomes from their maternal mother and 23 chromosomes from their paternal father. The mode of inheritance occurs during the pairing of the X and Y chromosome. The chromosome number 21 has an extra chromosome that occurs during or before conception. The extra chromosome on number 21 occurs from a nondisjunction in the maternal mother’s egg cell. (Margulies, 2007)
The salient features of a child who suffers Down syndrome are their eyes have a slant that is upwards, and their irises have white spots. Their muscles are weak, and mass tone is low. Their nasal bridge is relatively flat. The center of the palms of their hand has creases that are deep and mostly single. Their tongues are somewhat protruding. There large and second toe has a relatively large space compared to what is considered normal. Below is a chromosomal map that shows the difference between the normal pairing of chromosomes and the abnormal pairing that constitutes chromosome number 21. Read More
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