post #98:
This is absolutely correct. It is one thing to say that environment and culture can and do impact genes given sufficient time, but entirely another to claim Brahmins have already developed a unique gene trait hat marks them as Satvik or whatever. Those who make this claim have not provided a scintilla of evidence, just some vague waving of the hand and invoking Robert Boyd. To ask them to put up is not unreasonable. Not doing so is revealing.
"Environment and culture can and do impact genes given sufficient time"--says Robert Boyd and is agreed by our friends here in unison. I hope this will not be reopened again looking for an escape hatch somewhere so that they can go back on the settled issues.
Boyd based his conclusions on this:
The best evidence available to Boyd and Richerson for culture being a selective force was the lactose tolerance found in many northern Europeans. Most people switch off the gene that digests the lactose in milk shortly after they are weaned, but in Northern Europeans—the descendents of an ancient cattle rearing culture that emerged in the region some 6000 years ago—the gene is kept switched on in adulthood.
Lactose tolerance is now well recognized as a case in which a cultural practice—drinking raw milk—has caused an evolutionary change in the genome. Presumably the extra nutrition was of such advantage that adults who were able to digest milk left more surviving offspring and the genetic change swept through the population.
Now brahmins to have unique gene traits what is required is (1)an effort and a need to have such traits and adherence to them (2)sufficient time for that "effort" to get coded into the genes as it happened with lactose tolerance of that Northern European tribe. If these two conditions are met then it can be reasonable concluded that brahmin genes would have got the hard coding done into them and would have become unique when compared to other genes in the large tribe called Indians. Now let us take the condition (1).
Our ancestors in India have taken the trouble to divide themselves into varnas on the basis of some parameter. Though what the parameter was is a subject of sectarian conflict, it is a fact that they did it on the basis of professions/occupations. Thus one group specialised in intellectual pursuit (included sciences, philosophy and literature etc.,) and came to be known as brahmins. Similarly physical prowess , valour, ruling the community giving it leadership in times of war and piece etc was pursued by another community called kshatriyas. I need not go into detail about other groups as it is all well known to the members here. The purushasuktham has been discussed here so much that there is no need to give any reference from that. It is enough to just refer to it. There is sufficient evidence that this division of labour and accordingly the community happened long back. Sufficiently long back for the genes to get the culture of each group coded into the genes the fundamental building blocks. Thus it is clear that the society in India evolved on the lines of these distinct groups with distinct cultural practices which were enabling the groups excel in their line of occupation. So requirement no (1) is met. The effort was there and the felt need was also there as they adhered to the varna system.
Taking requirement no (2) now. Was there sufficient time for the impact to get coded? If a period of 6000 years was sufficient for lactose tolerance to get coded several such 6000 years have gone by in this country called bharathvarsh for the unique cultural traits of brahmins to get hardcoded into the genes. Now I hope there will geologists jumping into the fray to take over the discussion to prove that Indian sub-continent is less than 6000 years old. Let us see.
Conclusion:For our present discussion both the requirements have been met and so the unique cultural traits of brahmins have gone into their genes as codes written down and tampering with it will have unpredictable consequences.
But, palindrome, I warned you at the beginning itself and it has come true just as I predicted. Be picky about who you argue with, or else this is what will happen ... take care my friend ....
For once I am happy that my words have been quoted here (highlighted). I said exactly this to palindrome with an example from my travel in the train.
I do not expect anybody to accept that I have proved my point. I know the egos are too elephantine to do that. But the silent majority who come here to just read will know the fact. They will be extra careful about their children choosing IC/IR marriages. That is only the கொசுறு. Thanks.