CULTURAL QA 03-2024-05A

All the below   QA arefrom Quora DIGEST to me  on   05-03-2024. 

Selected quora answers generally interesting includingjokes are included Still 
they   need notbe 100% correct answers. I am only a compiler. 

Compiled and posted by R. GopalaKrishnan, 80,    on 05-03-2024.

Q1      What are some of the greatest examples ofpresence of mind?

A1      RavinderRavi, Knows some stories of smart people Updated 6y

I read this a long time ago.​ Eventhough the incident is hard to believe 
because there is no proper proof, it is still quiteinteresting and memorable.

C. N. Annadurai was a prominent chief minister of the Tamil Nadu state of 
Indiawho was known for his proficiency in languages - particularly English 
andTamil.

Once he went on a foreign tour to Yale university during1968.

He was awarded the Chubb Fellowship at Yale University,being the first 
non-American to receive this honour

There he was requested to speak to the students.During an interactive session 
held with students, guys were allowed to ask somepuzzle like questions that 
tests one's English proficiency.

One of the guys asked him to say a hundred words inEnglish which don't contain 
the letters A, B, C or D.

Annadurai immediately started to tell the words one by one.They are one, two, 
three up to ninety nine!

Everyone present around there were surprised andwaiting for his 100th word. If 
he said 'hundred' he would have failed butafter 'ninety nine', he said 'STOP'.

The crowd was filled with a minute of huge applause.

Q2      If the Aryan invasion theory is false,then why are the Indian people in 
the Northern parts fairer than that of thesouthern parts?

A2      AmbikaVijay, Indian Updated 2y

Note :    Aryaninvasion is not accepted by the Academia. It is Aryan migration 
theory.

Current Indian population was shaped by four majormigrations, so everyone is a 
mix.

The accepted major migrations are : Out of Africa migrations(South Asianhunter 
gatherers), Proto Dravidian migrations, Austroasiatic migrations(Mundas, 
Khasis) , Steppe migrations (Aryans)

Aryanmigration or the Steppe migration was largely responsible for the 
introductionof a light skin allele now found through out the sub continent.

To understand how Aryans introduced the light skinallele to the Indian 
subcontinent :

Geneticistspropose that as humans started to colonize higher latitudes, where 
Ultra violet radiationlevels were lower, dark skin could not absorb sufficient 
UVR for efficientvitamin D synthesis, hence natural selection favored the 
evolution of lightskin.

One of the keypigmentation genes in humans is SLC24A5.

An allele of this gene rs1426654 explains 25–38% of theskin color variation 
between Europeans and West Africans.

Theancestral (rs1426654- G) allele of the SNP predominates in African and 
EastAsian populations (93–100%),    whereas the derived (rs1426654 - A) allele 
is almost fixedin Europe (98.7–100%)

A recent study showed that the light skin associated allelein South Asians is 
identical by descent to that found in Europeans.[1]

The study foundthat rs1426654-A allele is responsible for light skin in Indians.

Frequency of SLC24A5 among global populations:

In short :

Early Humans were all dark.

When humans first moved out of Africa and colonizedhigher latitudes, they 
developed light skin.

The Gene responsible for light skin is SLC24A5

A variation ofan allele of this gene rs1426654-A is responsible for light skin 
in Europeansand South Asians.

The ancestral allele rs1426654-G is predominantlyfound in Africans and East 
Asians.

The study found that Indo Aryan speakers have thehighest percentage of this 
allele.

The Light skinAllele is high in Northern and North western regions and 
virtually absent in NEIndia :

The study alsofound that there is a general trend of rs1426654-A allele 
frequency beinghigher in the Northern (0.70±0.18) and Northwestern regions 
(0.87±0.13),moderate in the Southern (0.55±0.22), and very low or virtually 
absent inNortheastern populations of the Indian subcontinent

They found that the rs1426654-A allele frequency inSouth Asia does not 
significantly correlate with latitude (r = 0.23, p = 0.15).

However, a significant negative correlation with longitude(r = −0.49; p = 
0.002) was observed.

The Map shows the distribution of the Allelers1426654-A :

They found that the Tibeto-Burman and theAustroasiatic language families have 
the lowest frequencies of the A allele.

The rs1426654-A allele frequency was significantlyhigher in Indo-European 
speakers than in other language groups.

In particular, there was a significant difference(p<0.001) between the A allele 
frequencies of the Indo-European and theDravidian speaking groups.

They found that both language and geography have asignificant influence on 
rs1426654-A allele frequency, as revealed by Mantel tests(p<0.001).

To make it simple:

Humans who settled in Eurasia evolved to have rs1426654-Aallele.When thesteppe 
migrations happened they brought this allele into Indian subcontinent.Indo 
Aryan speakers have thehighest percentage.

There was significant difference in the percentage ofthis A allele, between 
Indo Aryan speakers and Dravidian speakers.

Austroasiatic speakers and Tibeto-burman speakershave the lowest percentage of 
this allele.

To have a rough idea of how these early populationsmight have looked :

The proxy for Indo Aryans : According to Narasimhanet al

The Modern Indian Cline intersects the Steppe Clineat a position close to the 
position of the Kalash,the group in northwest SouthAsia with the highest ANI 
ancestry proportion.

So, Kalash tribes are a proxy for Indo Aryanpopulations:

So the first Steppe migrants might have looked likethis.

The Proxy for South Asian hunter gatherers are theIrulas :

The SHG populations would have had skin pigmentationclose this :

Austroasiatic populations : the Mundas :

Footnotes[1]The Light Skin Allele of SLC24A5 in South Asians and 
EuropeansShares Identity by Descent

Q3      What are the credentials of  Harkchandra Savla

A3      ChauhanBabu Nath,Sun

A young man of about thirty years was standing on thefootpath in front of 
thefamous Tata Cancer Hospital in Mumbai.

The young man was watching with great attention thepatients standing at the 
door of death on the stairs of the hospital.Thefeeling of pain and distress was 
clearly visible on their faces.

Along with these patients, their relatives were alsoworried.Within ashort time 
this scene started troubling the young man.

Most of thepatients present there were from remote villages, who did not even 
know what to do, whom to meet? These people did not even have money for 
medicine and food.

Seeing this scene in front of Tata Cancer Hospital,the thirty year old young 
man returned home with a heavy heart.

He decided to dosomething for them. The desire to do something did not let him 
sleep day and night.Finally he thought of a way.

That young man collected some money by renting his hotel. With this money, he 
started charity work by takinga building right in front of Tata Cancer Hospital.

His activity has now completed 27 years and isprogressing every day. Thesaid 
charitable organization provides free food to cancer patients and 
theirrelatives.

This work started with about fifty people and thenumber kept increasing 
continuously. As the number of patients increased,helping hands also started 
increasing. Despite facing every season of winter,heat and rain, this work did 
not stop.

The name of the young man who did this noble work wasHarkchand Savla.

After getting success in a work, Harkchand Savla started supplying free 
medicines to the needy.

For this, he has created a Medicine Bank, in whichthree doctors and three 
pharmacists provide voluntary service. Not only this, abank of toys has also 
been opened for children suffering from cancer. You will be surprised to 
knowthat 'Jeevan Jyot' Trust established by Savla for cancer victims is working 
onmore than 60 projects today.

Even at the age of 57, Savla's enthusiasm and energyis the same as 27 years 
ago.Hiscontribution to humanity needs to be saluted.

It is ironical that today people look at Sachin, whoplayed 200 Test matches in 
20 years and scored a few centuries and thirtythousand runs, as a god.

Whereas no oneeven knows the person who provides free food to 10 to 12 lakh 
cancer patients.

Here there is also a question on the role of media,which ignores people like 
Savla.

It should also be mentioned here that Google does noteven have a picture of 
Savla.

We have to understand that God will not be found bydonating lakhs of rupees at 
places like Pandharpur, Sai Temple in Shirdi, TirupatiBala Ji etc.

But for the last 27 years, cancer patients and theirrelatives have found God in 
the form of Harkchand Savla.

Spread this message to as many people as possible sothat Harkchandra Savla can 
get his share of fame and those doing such work canbe encouraged!!

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