Originally posted by 1798
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I checked out my son's FF results with mine.
My son Me
AA 112,612 112,239
GG 130,548 130,796
TT 112,473 112,796
CC 131,312 131,411
AG 82,211 82,867
TC 81,990 82,981
AC 18,743 19,103
TG 18,765 18,914
I noticed also that I have a lot of the same X SNP alleles as my son. I don't know how that is.
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Can anyone explain why I match my son in SNPs but the chromosome positions are different? Here is a sample.
RSID CHROMOSOME POSITION RESULT RSID CHROMOSOME POSITION RESULT
rs4477212 1 82154 AA rs4477212 1 72017 AA
rs3094315 1 752566 AA rs3094315 1 742429 AA
rs3131972 1 752721 GG rs3131972 1 742584 GG
rs12562034 1 768448 GG rs12562034 1 758311 GG
rs12124819 1 776546 AG rs12124819 1 766409 AG
rs11240777 1 798959 GG rs11240777 1 788822 GG
rs6681049 1 800007 CC rs6681049 1 789870 CC
rs4970383 1 838555 CC rs4970383 1 828418 CC
rs4475691 1 846808 CC rs4475691 1 836671 CC
rs7537756 1 854250 AA rs7537756 1 844113 AA
rs13302982 1 861808 GG rs13302982 1 851671 GG
rs1110052 1 873558 TT rs1110052 1 863421 TT
rs2272756 1 882033 GG rs2272756 1 871896 GG
rs17160698 1 887162 TT rs17160698 1 877025 TT
rs3748597 1 888659 CC rs3748597 1 878522 CC
rs13303106 1 891945 GG rs13303106 1 881808 GG
rs28415373 1 893981 CC rs28415373 1 883844 CC
rs13303010 1 894573 AA rs13303010 1 884436 AA
rs6696281 1 903104 CC rs6696281 1 892967 CC
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Originally posted by 1798 View PostCan anyone explain why I match my son in SNPs but the chromosome positions are different? Here is a sample.
RSID CHROMOSOME POSITION RESULT RSID CHROMOSOME POSITION RESULT
rs4477212 1 82154 AA rs4477212 1 72017 AA
rs3094315 1 752566 AA rs3094315 1 742429 AA
rs3131972 1 752721 GG rs3131972 1 742584 GG
rs12562034 1 768448 GG rs12562034 1 758311 GG
rs12124819 1 776546 AG rs12124819 1 766409 AG
rs11240777 1 798959 GG rs11240777 1 788822 GG
rs6681049 1 800007 CC rs6681049 1 789870 CC
rs4970383 1 838555 CC rs4970383 1 828418 CC
rs4475691 1 846808 CC rs4475691 1 836671 CC
rs7537756 1 854250 AA rs7537756 1 844113 AA
rs13302982 1 861808 GG rs13302982 1 851671 GG
rs1110052 1 873558 TT rs1110052 1 863421 TT
rs2272756 1 882033 GG rs2272756 1 871896 GG
rs17160698 1 887162 TT rs17160698 1 877025 TT
rs3748597 1 888659 CC rs3748597 1 878522 CC
rs13303106 1 891945 GG rs13303106 1 881808 GG
rs28415373 1 893981 CC rs28415373 1 883844 CC
rs13303010 1 894573 AA rs13303010 1 884436 AA
rs6696281 1 903104 CC rs6696281 1 892967 CC
RSID CHROMOSOME POSITION RESULT RSID CHROMOSOME POSITION RESULT
rs17883004 X 1370495 GG rs17883004 X 1370495 GG
rs5939319 X 2710157 GG rs5939319 X 2710157 GG
rs1419931 X 2713633 GG rs1419931 X 2713633 GG
rs311173 X 2722661 CC rs311173 X 2722661 CC
rs311183 X 2724756 TT rs311183 X 2724756 TT
rs4484858 X 2725425 AA rs4484858 X 2725425 GG
rs6642025 X 2735883 CC rs6642025 X 2735883 CC
rs3671 X 2743668 AA rs3671 X 2743668 AA
rs901321 X 2747282 GG rs901321 X 2747282 GG
rs10126656 X 2747785 CC rs10126656 X 2747785 CC
rs5982588 X 2753627 AA rs5982588 X 2753627 AA
rs2018631 X 2756558 CC rs2018631 X 2756558 CC
rs4892897 X 2770060 TT rs4892897 X 2770060 TT
rs17090628 X 2784609 GG rs17090628 X 2784609 GG
rs5939373 X 2786372 TT rs5939373 X 2786372 TT
rs2306734 X 2787985 TT rs2306734 X 2787985 TT
rs1905995 X 2788526 GG rs1905995 X 2788526 GG
rs17330993 X 2789749 CC rs17330993 X 2789749 CC
rs5939137 X 2793555 GG rs5939137 X 2793555 GG
Here is a sample from my son and my X results. We have two different mothers passing on two separate X chromosomes so how is that we match on a lot SNPs?
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Originally posted by 1798 View PostCan anyone explain why I match my son in SNPs but the chromosome positions are different? Here is a sample.
RSID CHROMOSOME POSITION RESULT RSID CHROMOSOME POSITION RESULT
rs4477212 1 82154 AA rs4477212 1 72017 AA
rs3094315 1 752566 AA rs3094315 1 742429 AA
rs3131972 1 752721 GG rs3131972 1 742584 GG
rs12562034 1 768448 GG rs12562034 1 758311 GG
rs12124819 1 776546 AG rs12124819 1 766409 AG
rs11240777 1 798959 GG rs11240777 1 788822 GG
rs6681049 1 800007 CC rs6681049 1 789870 CC
rs4970383 1 838555 CC rs4970383 1 828418 CC
rs4475691 1 846808 CC rs4475691 1 836671 CC
rs7537756 1 854250 AA rs7537756 1 844113 AA
rs13302982 1 861808 GG rs13302982 1 851671 GG
rs1110052 1 873558 TT rs1110052 1 863421 TT
rs2272756 1 882033 GG rs2272756 1 871896 GG
rs17160698 1 887162 TT rs17160698 1 877025 TT
rs3748597 1 888659 CC rs3748597 1 878522 CC
rs13303106 1 891945 GG rs13303106 1 881808 GG
rs28415373 1 893981 CC rs28415373 1 883844 CC
rs13303010 1 894573 AA rs13303010 1 884436 AA
rs6696281 1 903104 CC rs6696281 1 892967 CC
rs4477212
Build 36 = 72017
Build 37 = 82154
In FTDNA, you can download result with Build 36 or Build 37 format. If you ever use David Pike's tools, it's obvious written there that data files based on different reference standards (such as Build 36 versus Build 37) should not be directly compared without first converting to a common standard.
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Originally posted by 1798 View PostThanks. I have downloaded the two of them. It still doesn't answer the question. Why has my wife the same SNPs as I have?
We are not related.
"A large gene pool indicates extensive genetic diversity, which is associated with robust populations that can survive bouts of intense selection. Meanwhile, low genetic diversity (see inbreeding and population bottlenecks) can cause reduced biological fitness and an increased chance of extinction, although as explained by genetic drift new genetic variants, that may cause an increase in the fitness of organisms, are more likely to fix in the population if it is rather small."Last edited by 1798; 17 July 2014, 12:52 PM.
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Originally posted by 1798 View PostWikipedia
"A large gene pool indicates extensive genetic diversity, which is associated with robust populations that can survive bouts of intense selection. Meanwhile, low genetic diversity (see inbreeding and population bottlenecks) can cause reduced biological fitness and an increased chance of extinction, although as explained by genetic drift new genetic variants, that may cause an increase in the fitness of organisms, are more likely to fix in the population if it is rather small."
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Originally posted by Parameswara View PostYou do realize that wikipedia explanation is about coding gene, right ? While majority of SNPs that have been used in ancestry purpose are non coding.
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Originally posted by 1798 View PostThanks. I have downloaded the two of them. It still doesn't answer the question. Why has my wife the same SNPs as I have?
We are not related.
How many identical SNPs allele (in one segment, in a row) that you both have ? 300, 400, 500 ? If you just have identical allele less than 300 SNPs in a row then you are not related to her. Well, FTDNA threshold is 7 cM (about 700 SNPs) in first segment and 5 cM (about 500 SNPs) in next segment to declare related.Last edited by Parameswara; 18 July 2014, 07:01 AM.
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I can't edit my previous post ?
Well sorry, I mix up something in previous post.
Why do you think if you are not related to your wife, then you will not get the same allele ? I give you an example ; there are just 3 possible result for rs4477212 which are AA, AG, or GG. So everyone in the world will get one of those 3 possible values.
How many identical SNPs allele (in one segment, in a row) that you both have ? 300, 400, 500 ? If you just have identical allele less than 300 SNPs in a row then you are not related to her. Gedmatch use 3 cM as a minimum threshold, 23andme use 7 cM (about 700 SNPs) in first segment and 5 cM (about 500 SNPs) in next segment, while FTDNA threshold is at least 500 SNPs in first segment and a total of 20 cM to declare two people related.Last edited by Parameswara; 18 July 2014, 07:38 AM.
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Originally posted by LynCra View PostYou are lucky to have such easy paper trail research within reach. I just wish I could find all 16 of mine, which is part of what I hope to get out of FF follow up. How about your next 32. Were they from further afield?
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Originally posted by Parameswara View PostWhy do you think if you are not related to your wife, then you will not get the same allele ? I give you an example ; there are just 3 possible result for rs4477212 which are AA, AG, or GG. So everyone in the world will get one of those 3 possible values.
How many identical SNPs allele (in one segment, in a row) that you both have ? 300, 400, 500 ? If you just have identical allele less than 300 SNPs in a row then you are not related to her. Well, FTDNA threshold is 7 cM (about 700 SNPs) in first segment and 5 cM (about 500 SNPs) in next segment to declare related.
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Originally posted by 1798 View PostMy son and I have one shared X match!!!!
By the way, how many cM you share with your son in X Chromosome ?
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