2006-11-22 12:30:35 · 5 answers · asked by osunumberonefan 5 in Science & Mathematics ➔ Medicine
You have 10 to 100 Trillion cells in your body. Every cell has the same genetic code. How would you change that code in so many cells?
Additionally, the genome is turning out to be much more complicated than was thought just a few years ago. Much of a gene's 'performance' is determined by 'epigenetic' regulation of the gene's expression. You can have 'normal' genes, but if they are not being expressed properly, that is the same as having defective genes.
This is a very, very complex issue.
2006-11-22 16:24:48 · answer #1 · answered by Doctor J 7 · 1⤊ 0⤋
Because a DNA molecule is approximately 4 billion pairs long. To find the defective gene would take decades upon decades. We just recently mapped the human genome. I think we did it less than ten years ago. We have known about DNA for almost fifty years and it took us almost forty to map it. Without the use of supercomputers, we would have never done it in 1000 years.
2006-11-23 03:30:31 · answer #2 · answered by christopher s 5 · 1⤊ 0⤋
DNA is a very very small structure in human body. It is lacs in no and if any extra dose happens then the patient may get someother genetic disease.
2006-11-23 03:08:12 · answer #3 · answered by Anonymous · 0⤊ 0⤋
because DNA is so complicated, the doctors wouldn't find a matching piece to the abnormal piece or organism the human body won't accept the new one .
2006-11-22 21:32:27 · answer #4 · answered by Gardenia 6 · 0⤊ 0⤋
because it is not easy to fix anyone's DNA. Can you imagine every single cell in human being containing DNA being repaired? It's not so easy, if not impossible.
2006-11-23 08:28:54 · answer #5 · answered by Rebecca N 3 · 0⤊ 0⤋