Navigation Links
DNA Underwent Changes Due To Culture

Natural selection is reported to have been responsible for much of the DNA among human beings during the course of the past 50,000 years. The tendency of human beings to live in settlements and cultivate fields can also be traced // to this natural selection process.

One way to look for genes that have recently been changed by natural selection is to study mutations called single-nucleotide polymorphisms (SNPs) - single-letter differences in the genetic code, according to the study. The idea is to look for pairs of SNPs that occur together more often than would be expected from the chance genetic reshuffling that inevitably happens down the generations.

Such co-relations were known as linkage disequilibrium, and could occur when natural selection favored a particular variant of a gene causing the SNPs nearby to be selected as well.

For their study, Robert Moyzis along with colleagues from the University of California, searched for instances of linkage disequilibrium in a collection of 1.6 million SNPs scattered across all the human chromosomes. Then, they looked carefully at the instances to distinguish the consequences of natural selection from other phenomena, such as random inversions of chunks of DNA, which can disrupt normal genetic reshuffling.

The findings published in the Proceedings of the National Academy of Sciences revealed that around 1,800 genes, or roughly 7% of the total in the human genome had changed under the influence of natural selection within the past 50,000 years.

A second analysis using a second SNP database also gave similar results. Researchers opine that humans may have ‘domesticated’ themselves with the emergence of modern civilization, much on the lines of domestication of food grains when they started cultivation.

"One of the major things that has happened in the last 50,000 years is the development of culture. By so radically and rapidly changing our environ ment through our culture, we've put new kinds of selection [pressures] on ourselves," New Scientist quoted Prof. Moyzis as saying.

Edited (ANI)
'"/>




Related medicine news :

1. Baby Underwent A Heart Surgery Inside The Womb
2. Overweight Briton Underwent Successful Surgery In India Being Denied By NHS
3. GlaxoSmithKline - Changes Lamictal(R) Label Appearance and Packaging
4. Changes in cabin pressure pose risks for moms-to-be
5. Dietary Changes Could Reduce The Risk for Stroke
6. Link Between High Blood Sugar And Behavioral Changes
7. Specific Changes In A Particular Gene Found To Increase The Risk of Alzheimer’s Diseas
8. Ultrasounds To Detect Changes In Heart Motions
9. Changes In Brain Structure From Methamphetamine Abuse And HIV Infection
10. Age Can Changes Symptoms Of Sinusitis
11. New Research To Study Brain Changes In Premature Births
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:12/2/2016)... ... December 02, 2016 , ... On Dec. 2, 2016, ... Rock Hotel San Diego honoring the 2016 MPN Heroes—eight individuals who have made a ... going above and beyond the standard of care, demonstrating leadership within the MPN community ...
(Date:12/2/2016)... ... December 02, 2016 , ... Advanced Inc., a leading provider ... Jason Bice, CPA, MBA to serve as Advanced Inc.’s Chief Financial Officer, effective December ... , Jason brings extensive financial and operational leadership experience to Advanced Inc. He began ...
(Date:12/2/2016)... , ... December 02, 2016 , ... The annual time ... Period (or Annual Election Period), is ending December 7th. Currently-enrolled Medicare beneficiaries who are ... or prescription drug plan (Part D) need to make changes during this period order ...
(Date:12/2/2016)... (PRWEB) , ... December 02, 2016 , ... ... inspirational interview of two ostomy patients, standing as living proof that attitude and ... from digestive diseases and issues that spike around the holidays. This campaign will ...
(Date:12/2/2016)... ... December 02, 2016 , ... Mediaplanet is proud to ... which covers the innovative treatments, therapeutic technologies, and revolutionized nutrition that are helping ... prolonging life 6 years in the last 3 decades,” says Dr. Valentine Fuster, ...
Breaking Medicine News(10 mins):
(Date:12/2/2016)... largest share in the ECG Cables And ECG Leadwires Market ... monitoring ECG devices. On the other hand, the ... highest growth rate during the forecast period. The ... (U.S.), Medtronic plc ( Ireland ), Koninklijke Philips ... International Limited ( China ), held major share ...
(Date:12/2/2016)... -- Quantum Radiology,s Mobile Breast Center (QR MBC) brings ... women at the workplace, thereby maximizing convenience and compliance.  ... Lines and SunTrust Bank, and community health groups to ... initiatives. "I think it,s a great service ... have a mammogram without taking a large amount of ...
(Date:12/2/2016)... , Dec. 2, 2016  Eli Lilly and ... financial guidance for 2017 and provide updated financial guidance ... also conduct a conference call on that day with ... company,s financial guidance. The conference call will ... general public can access a live webcast of the ...
Breaking Medicine Technology: