Sinhalese and Tamil DNA Admixture Analyis

Updated analysis of DNA admixture of Sri Lankan participants at HarappaDNA. There are 7 Sri Lankans (3 Sinhalese, 4 Tamils). I have not included the part Sri Lankans whose immediate parents are not from Sri Lanka.

For comparison of Sri Lankan DNA with neighboring populations I have included seven other populations, TN Tamil(7), TN Tamil Brahmins(14), Kerala(10), Bengali(7), Punjabi(18) and Iranian(8). (TN=Tamil Nadu, (#) = the number of individuals). So before the results,
  *please consider getting a DNA test. Its USD 99 at 23andMe.
  *All Charts are Interactive. Clicking on them will sort the chart or table and info on data point.

Average Component Admixture for Populations

Components are based on reference population peaks. Please see National Geographic Reference Populations Overview and Regions overview for lucid description of similar analysis. Do also have a look at the complete Harappa World Admixture. This analysis is a subset of Harappa World Admixture.

South Indian Component
1) Decreases from TN Tamil (60%) > SL Tamil (58%) > Sinhalese (55.5%)
2) Bengali's, Kerala and TN Tamil Brahmins have approx the same (48%)
3) As expected Iranias have the least (3%). Europeans (not in this data) have 0%.

Baloch Component
Ranges from 40% (Punjabi's) to 29.1% (TN Tamil) for South Asian populations. Sinhalese and SL Tamils are in the mid range with approx 31%.

Caucasian Component
Iranians have 41% of this component. The Punjabis have 9.8%. Southern and East South Asians have less that 5%, with Sinhalese 3.3% and Tamil 2.1%

South East (SE) Asian Component
Bengali's have the highest percentage (4.7%) of this component reflecting proximity of borders with SE Asian populations. Sinhalese have 1.6% of SE component while, TN-Tamils and SL-Tamils both have 1.3% of SE Asian component.

Chart of Component Admixture for each Individual

The South Indian component is close to 60% for both Sinhalese and Tamils except for individual HRP0122 (49%) and HRP0232 (53%). HRP0232 is I, this blog author. The low f53% (for Sri Lankan) South Indian component is probably because of a maternal great grandmother who was probable European. Thats is reflected in the elevated NE European component of 4.7% compared other Sri Lankans with less than 2%. HRP0122 too has elevated NE European component of 4%. Maybe HRP0122  may care to comment on the elevated NE European component. HRP0122 and I we have corresponded by email and know of our identities.

Table of HarappaID's etc

Table has the Sri Lankan (Sinhalese and Tamil) and few subset individuals with their Harappa ID, Self ID'd Ethnicity and Assigned Group Population for this Analysis.

Resources:
a) Excel Spreadsheet of Data used in this analysis.
b) The complete World Admixture results at HarappaDNA.

Also See:
1) My DNA 01: Heroin Addiction, Smoking etc
2) Sri Lankan Population DNA Genetics 01
3) Basic Primer on Population DNA Genetics