Three times in the video Keith Crandall claims Middle Eastern DNA has been found in the Maya.
“The most recent DNA evidence that I’ve seen, in terms of peopling of the Americas, shows this Middle Eastern haplotype at greatest frequencies in the Mayan people; so if that’s your perception of where Lehi and company set up shop then the DNA evidence would be consistent with that.”
25 minutes 07 seconds
"…the fact is, based on this paper by Noah Rosenberg from the University of Michigan that there are in fact Middle Eastern haplotypes in where we as Latter-day Saints would expect them to be; in the Mayan population, as opposed to across all North and South America.
37 minutes 37 seconds
"…there is an interesting bit of data that probably only an LDS scientist would pick up…[chuckle]…which shows for the Mayan people and maybe one or two other cultures close geographically to the Yucatan area…there’s actually a nice infusion of Middle Eastern…what they call Middle Eastern genotypes in those populations."
3 minutes 25 seconds
“The real issue is that these guys don’t actually look at the population genetic literature, they don’t understand the population genetic literature because they’re not population geneticists…so they couldn’t interpret these kinds of data. It's a very tricky kind of literature and a tricky kind of data to wrap your brain around. But it’s pretty patently obvious when you look at their data in this one figure in particular. If that's what you’re looking for it's there.”
The truth is these studies are now routine and they are done in hundreds of plant and animal populations. I have been actively engaged in forest tree population genomics research for well over a decade and have published research in the field. I am very familiar with the population genomics research that Keith Crandall cites because we did identical types of analyses in trees.
A tricky kind of dataWhen asked for references to his claims Crandall directs people to two published papers, Li et al. 2008 and Rosenberg et al. 2005). In contrast to earlier studies on mitochondrial DNA, this research was focussed on nuclear DNA variation. In the paper by Li et al. (2008) they studied the nuclear DNA of 938 unrelated individuals from 51 global populations at 650,000 common single-nucleotide polymorphisms (SNPs). SNPs are points in the genome where single base differences occur in the human population.
A SNP is a single-letter change in DNA
SNPs are part of the natural genetic variation found within all human populations. In Li's research they showed that global populations can be clearly distinguished on the basis of the hundreds of thousands of SNPs they carry. This is illustrated in the figure below.
If we look at more Native American populations we see exactly the same sort of thing. European and African admixture is found in many Native American populations (Figure 3).