/sci/ - Science & Math

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Anonymous Mon May 13 19:46:44 2013 No.5757514 [Reply] [Original]

I recently did a dna test and it says that Africans and Asians only share 70% of my 527513 SNPs they tested, I thought we were 99.9999% the same as everyone?

>>	Anonymous Mon May 13 19:49:12 2013 No.5757518 Why would the compare the entire genome? It's best to just look at the parts of genome that actually have variance. That would be my guess, but this is still a troll thread.

>>	Anonymous Mon May 13 19:50:42 2013 No.5757521 >>5757518 How is this a troll thread, I am genuinely curious as to why the large difference and why wouldn't you compare the entire genome

>>	Anonymous Mon May 13 19:54:12 2013 No.5757532 >>5757521 Like >>5757518 said. More efficient to take a look at the most dynamic sections of your genome. Probably.

>>	Anonymous Mon May 13 19:56:57 2013 No.5757536 >>5757532 How is that more efficient, if anything it's less efficient because you're only likely to find more similarities as lewontin's fallacy shows thus skewing the results

Anonymous Mon May 13 20:01:12 2013 No.5757548

>>5757536
I'm not geneticist. The fact is that nowhere near your full genome was tested. As far as I know there are only 10 million SNPs in the human genome. Your test is 5% complete. It (through miracles) might still be upwards of 97-98% identical. This is why it would probably be safe to assume that the most dynamic snips were compared.

>>	Anonymous Mon May 13 20:03:43 2013 No.5757555 >>5757548 Thank you, but I noticed you said 97%, why do people say 99.9999%

>>	Anonymous Mon May 13 20:03:57 2013 No.5757553 File: 997 KB, 500x700, 1366570215725.gif [View same] [iqdb] [saucenao] [google] >>5757548 I'm not a*

>>	Anonymous Tue May 14 02:26:12 2013 No.5758315 SNP = 1 bp DNA genome = 3.2 billion 527513 SNP's tested 527513 x 30% different = 158254 bp different 158254/ 3.2 billion = 00.000049454375 difference between you and the asian. 99.995% same.

>>	Anonymous Tue May 14 02:46:57 2013 No.5758334 I think it's just comparing SNPs SNPs = single nucleotide polymorphism Basically these are the nucleotides in the genome where it may differ from person to person The rest of the genome is probably 99% similar

Anonymous Tue May 14 02:50:42 2013 No.5758344

>>5757514
Costs too much to do full genome sequencing. They probably did some microarray stuff. It keeps costs low, which is fine. Not to worry, full genome sequencing is only ~$1000 now and dropping fast.

Though it irks me how people still publish studies using microarray data. Don't they know it's 2013?

>>	Anonymous Tue May 14 02:54:59 2013 No.5758348 >>5758344 b...but getting the genome sequenced doesnt tell you what microarrays tell you

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