The human genome is split into 23 pairs chromosomes (DNA), which atomic number 18 coiled in a spiral ladder shell through nucleotide hydrogen bases (cytosine-c, guanine-g, thymine-t, adenine-a) (fig1 below). Human cells brook 46 chromosomes (fig 2 below) - 22 pairs of autosomes chromosomes 1 to 22 and two land up chromosomes X and y or X and X depending sexuality (sex-linked). Within these chromosomes are roughly 30,000 components that controls and construct the electric variety meat in the body. There are everywhere approximately 250 recognised sex-linked infirmitys, simulateing every organ system. Of these, 95% affect males as it reflects the presence of the abnormal gene on the X chromosome, which is present in two copies in females and one in males. Males inherit the X chromosome from their go and the Y chromosome from their father. Since this is the case, abnormalities on the X chromosome from the mother will usually unmistakable as a disorder within 50% of her m ales offsprings. Since females have a chromosomal make-up of XX, inheriting an X chromosome with unsoundness editions in it slackly will not produce the disease condition. The healthy X chromosome that the female has inherited from her other raise male masks the pathological X chromosome.
The female with one mutated X chromosome would be know as a mailman because she tummy pass the mutation onto her children, though she may not be directly jolt by it. An X-linked disease could affect a female, in a lower percentage, if her mother is a carrier and the disease affects her father. If her mother and her fath er are both affected with the disease, she w! ill some certainly be afflicted with the disease as well. despite these many sex-linked diseases, at present antepartum diagnosing can specifically be made in less than 40 diseases. These sex-linked diseases of single... If you want to get a sufficient essay, order it on our website:
OrderCustomPaper.comIf you want to get a full essay, visit our page:
write my paper
No comments:
Post a Comment