tay-sachs

Essay specific features

 

Issue:

Science

 

Written by:

Jackie W

 

Date added:

September 15, 2012

 

Level:

University

 

Grade:

A

 

No of pages / words:

4 / 978

 

Was viewed:

4010 times

 

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Essay content:

An early sign of the disease is the cheery-red spot in the retina of the eye examined only by the use of an ophthalmoscope. The association of the central nervous system develops quickly and affected children become totally incapacitated by two or five years of life. Tay-Sachs is an inherited disease that only occurs when both parents transmit the defective gene to their child therefore this disease is recessive since it needs both malfunctioning genes to appear...
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Tay-Sachs disease is controlled by a pair of genes on chromosome 15 which code for the production of the enzyme Hex-A. Children with Tay-Sachs disease have no working version of this gene which usually breaks down excess fatty substance and without it; fats build up and eventually destroy the nerve cells of the affected child...
displayed 300 characters

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