Why cantThe average South Indian body structure..features..height..body muscle mass ratio etc doesnt differ much from community to community.
South Asians(South Indians included) over all have much less muscle mass and have higher body fat ratio and a higher risk for metabolic syndrome which is NOT the case for an races from Europe.
I saw a video of a very middle eastern Europeanish looking Pakistani who did his DNA and his DNA showed South Asian ONLY. No European heritage or middle eastern heritage.
Then there was another video of an very European looking arab whose DNA did show some European ancestory and also Indian ancestory which he never knew about.
Another Arab had African genes too.
Anyway the point here is....how did Brahmins acquire south indian looks ?
The fact is a TB looks very south indian and does not look european at all.
Some North Indian Brahmins at times do look a bit Europeanish or more middle eastern but this is rarely seen in a South Indian Brahmin especially from Tamil Nadu.
Being fair skinned doesn't give one European looks...Chinese/Japanese/Koreans are also very light skinned but do not look European at all.
I dont buy the migration story but I feel there surely was other DNA's that came along into India from races that came and conquered..or stayed.
Men usually took local wives/partners or chinna veedus or part time lovers and the children spoke their mothers language.
If we observe an offspring of a South Indian and a Caucasian mostly they end up looking like very good looking Northern Indians.
But if a North Indian and a Caucasian mix off spring tends to look more Caucasian.
So this gives a rough idea that some parts of India could have had some other races DNA.
Since Tamil Brahmins look very south indian may be thats how they really looked like and their genes didnt get exposed to invador or Greek genes hence retained their original Indian look.
It is quite possible a part of land separaTed from other continents and joined China . German language is very similar to sanskrit.And none of the Indians have any white features - hairs, eyes, skin colour, etc..
No offence to anyone. On the other hand, North Indians Hindus and Muslims look the same, same features, same language - Hindi and Urdu are same except script, same customs - Holi is the same as Eid e Gulabi, food is same - roti, sabji, etc..
So how lah ??? Same discredited theory is circulated every now and then..