How to convert physical position to genetic position given 1cM = 1Mb?

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3.7 years ago

GiantSilverSoy ▴ 130

Hi all,

Given the set of SNPs with known position as follows, how to apply the assumption of 1cM = 1Mb to get the genetic positions?

chr22   rs5747999   14560203
chr22   rs11089263  14715506
chr22   rs16981741  15272858
chr22   rs175148    15284080

After googling, all I got was just the equation without any further details.

Thanks!

IBDLD geneticmap • 1.9k views

ADD COMMENT • link updated 3.7 years ago by Pierre Lindenbaum 164k • written 3.7 years ago by GiantSilverSoy ▴ 130

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see How To Convert Centimorgan To Base Pair

ADD REPLY • link 3.7 years ago by Pierre Lindenbaum 164k

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Thanks. However, I specifically want to know how to apply the 1cM = 1Mb, not just how to convert cM to bp in general.

ADD REPLY • link 3.7 years ago by GiantSilverSoy ▴ 130

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use awk

ADD REPLY • link 3.7 years ago by Pierre Lindenbaum 164k

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Thanks again! But I am not asking about the command line. I meant how to convert a position, for example 14,560,203 on chr22, into centimorgan. It is certainly not 14,56 cM.

ADD REPLY • link 3.7 years ago by GiantSilverSoy ▴ 130

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again, see my answer: A: How To Convert Centimorgan To Base Pair

ADD REPLY • link 3.7 years ago by Pierre Lindenbaum 164k

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