I was wondering if there is an easy procedure to derive the expected coordinates of one parent, if you have the coordinates of the other parent and the child of the couple.
I was wondering if there is an easy procedure to derive the expected coordinates of one parent, if you have the coordinates of the other parent and the child of the couple.
Distance: 1.4145%
37.4 TUR_Tepecik_Ciftlik_N
32.2 Kura-Araxes_ARM_Kaps
18.8 Yamnaya_RUS_Samara
11.6 CHN_Boshan_N
97.6% Anatolian, 1.3% Central Asian, 0.7% Sudanese, 0.4% Trace (23&me)
I posted a script for that in the first page of the stickied Shell commands and R scripts for working with G25 thread.
Liquid (06-29-2021)
You can get approximations, but heritability depends on many factors, so you will never get the actual coordinates.
Apart from using R, you can simply apply simple mathematical formulas, easy to solve with a spreadsheet for example:
Father=2*Son-Mother
Or if you prefer: Father=(Son+Son) - Mother
You can also use PCA, imagine where one parent or the son would plot, choose some close individual samples near that point and make averages of them. Itīs suposed that a son would plot near the middle point between both parents (is my case, but I have seen different cases).
What I tell you, even if it is not something very reliable, can help you to get an idea of how the coordinates of the parents whose coordinates could be could be.
chocoholic (06-29-2021), fabrice E (06-28-2021), okarinaofsteiner (07-04-2021), rober_tce (06-27-2021)
Distance: 1.4145%
37.4 TUR_Tepecik_Ciftlik_N
32.2 Kura-Araxes_ARM_Kaps
18.8 Yamnaya_RUS_Samara
11.6 CHN_Boshan_N
97.6% Anatolian, 1.3% Central Asian, 0.7% Sudanese, 0.4% Trace (23&me)
Distance: 1.4145%
37.4 TUR_Tepecik_Ciftlik_N
32.2 Kura-Araxes_ARM_Kaps
18.8 Yamnaya_RUS_Samara
11.6 CHN_Boshan_N
97.6% Anatolian, 1.3% Central Asian, 0.7% Sudanese, 0.4% Trace (23&me)
Liquid (06-30-2021)
Well, as I already told you, unless you get the real coordinates of the G25, these are not but simple methods to get approximations.
How accurate is all that? Little in general, although it depends on the individuals, but all these methods can give you an idea about how some of your parents coordinates could be.
As you understand, I cannot give you a figure or percentage that would express "accuracy" in this.
Liquid (06-30-2021)