Claim: Control region sequences from over 2,000 samples collected from across Mexico revealed that nearly 90% of maternal lineages belong to the four major Pan-American haplogroups: A2, B2, C1, and D1.
Verdict: Partially True (80% confidence)
Explanation: According to the NIH article 'The Mitochondrial DNA Landscape of Modern Mexico', control region sequences from 2021 samples collected across Mexico revealed that nearly 90% of maternal lineages belong to the four major Pan-American haplogroups: A2, B2, C1, and D1. This is corroborated by a study on ResearchGate, which also states that the samples showed an overwhelming Indigenous American legacy with almost 90% belonging to these haplogroups. Additionally, a source from Springer confirms that al...