2007-03-31 07:27:36 · 10 answers · asked by raveendra k 1 in Science & Mathematics ➔ Medicine
Hi Raveendra. This is actually a very interesting question. Prior to the completion of the Human Genome Project (HGP), scientists believed they would find 90,000 to 120,000 genes.
They were surprised to discover a much smaller number after the completion of the HGP. Their first "post-project" estimate was about 40,000 genes. Quickly this number was reduced to 32,000, then 30,000, then 25,000. The last estimate I saw was 22,600.
You might have a 'little fun' with this data and plot a graph of estimated number of genes versus time. If the current trend continues (it won't of course), the graph would project NO genes in the near future!
Best wishes and good luck.
2007-03-31 12:29:43 · answer #1 · answered by Doctor J 7 · 0⤊ 0⤋
The number of genes is estimated (by the results of the human genom project) to be abaut 20-29.000. But the number stil rises, because they sequence the DNA even to a greater extend and they are finding new genes. You have to keep in mind, that the HGP was done on a doners DNA and it is not your DNA, so you can't compare the number exsactly. If you had a lot of money, you could eventualy order the sequencing of your own DNA. But at this point noone can exsactly say how many genes they are.
2007-03-31 15:22:07 · answer #2 · answered by Sasa K 1 · 1⤊ 0⤋
I believe the number is currently estimated to be about 18-20 thousands, while corn has about 40 thousand. That's pretty interesting if you think about it, although our genes are larger and code for more complex proteins. The idea when it comes to genes and chromosomes is quality, not quantity; one current gene can probably perform the tasks that a hundred could in the early days of chromosomes.
http://scienceblogs.com/loom/2007/03/19/you_dont_miss_those_8000_genes.php (Says about 18 thousand)
http://en.wikipedia.org/wiki/Human_genome (Says 20-25 thousand)
2007-03-31 14:41:35 · answer #3 · answered by Robinson0120 4 · 1⤊ 0⤋
23
2007-03-31 14:30:21 · answer #4 · answered by Gaurav 2 · 0⤊ 1⤋
Prior to the completion of the Human Genome Project (HGP), scientists believed they would find 90,000 to 120,000 genes.
2007-03-31 23:05:16 · answer #5 · answered by kartik 2 · 0⤊ 0⤋
u know the number of genes is not identified yet
each part of chromosome s can be a gene
2007-03-31 14:34:41 · answer #6 · answered by red light 1 · 0⤊ 0⤋
It's ongoing, check PBS.Com, PBS had a good show on the human genenome project,mappint the human genenome.
2007-03-31 15:09:14 · answer #7 · answered by Anonymous · 0⤊ 0⤋
Currently the number is being revised downward, but 20,000 to 30,000 is an approximate answer.
2007-03-31 17:06:52 · answer #8 · answered by fatboycool 4 · 1⤊ 0⤋
30,000 to 40,000 genes
2007-03-31 22:31:56 · answer #9 · answered by $ri 3 · 0⤊ 0⤋
it may very man to man.
2007-03-31 15:02:33 · answer #10 · answered by DPS T 1 · 0⤊ 0⤋