Mains Paper 3 : Awareness In The Fields Of It, Space, Computers, Robotics, Nano-Technology, Bio-Technology |
From UPSC perspective, the following things are important :
Prelims level : Lakshadweep Islands
Mains level : Read the attached story
Genetic studies in Lakshadweep
- Genetic studies on the people of the Lakshadweep archipelago was done by a team of CSIR-Centre for Cellular and Molecular Biology (CCMB), for the first time.
- It has have shown that a majority of human ancestry in Lakshadweep is largely derived from South Asia with minor influences from East and West Eurasia.
- And, there was no evidence of early human migration through the Lakshadweep islands.
Findings of the study
- The islands are located between Africa and southwestern part of India.
- Through our earlier studies we know that early human migration from Africa to Andaman and Australia happened through western coast of India.
- So it was presumed that Lakshadweep Islands might have played a major role in early human migration and expected the presence of genetic signatures of ancient people, such as Andamanese and Australian aboriginals.
- The study of major islands of Agatti, Andorth, Bitra, Chetlat, Kadmat, Kalpeni, Kiltan and Minicoy of Lakshadweep and demonstrated a close genetic link of Lakshadweep islanders with people from Maldives, Sri Lanka and India.
Why study Lakshadweep?
- Lakshadweep is an archipelago of 36 islands, scattered over approximately 78,000 square km of the Arabian Sea, 200-440 kms off the south-western coast of India, with a population of approximately 65,000.
- However, the genetic composition of the first human settlement of this archipelago is not clear.
- The islands were known to sailors since ancient times and historical documents say that the spread of Buddhism to these islands happened during 6th century B.C. and Islam was spread by in 661 A.D. by Arabians.
- Cholas ruled the islands in 11th century, Portuguese in 16th century, Ali Rajahs in 17th, Tipu Sultan in 18th before the British Raj of 19th century.