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ID number:713191
 
Evaluation:
Published: 12.11.2003.
Language: English
Level: Secondary school
Literature: n/a
References: Not used
Extract

The human genome is split into 23 pair's chromosomes (DNA), which are coiled in a spiral ladder type through nucleotide hydrogen bases (cytosine-c, guanine-g, thymine-t, adenine-a) (fig1 below). Human cells have 46 chromosomes (fig 2 below) - 22 pairs of autosomes chromosomes 1 to 22 and two sex chromosomes X and y or X and X depending gender (sex-linked). Within these chromosomes are roughly 30,000 genes that controls and construct the organs in the body.
There are over approximately 250 recognized sex-linked diseases, affecting every organ system. …

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