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Thursday, March 29, 2012

Dayak DNA Present in Madagascar

Malagasy ethnic groups who are now in Madagascar was derived from the womb of 30 women who were stranded in the area at 1,200 year ago. Among the 30 women, 28 women of whom are from Indonesia.
Were first Malagasy accidental tourists? (Picture from: http://www.newscientist.com/)
Murray Cox, genetics researchers from Massey University, New Zealand, interested in research that states that the Dayak blood flow in the body of the people of Madagascar. Mentioned a millennium ago the original ethnic group of Borneo (Kalimantan) sailing a boat in the Indian Ocean. Hardness of the waves in the waters of this area to push the boat up stranded on an uninhabited Madagascar.

The stranded group then open land in the plains ttnggi to be settlements and fields. "We're talking about a culture that migrated across the Indian Ocean," he told LiveScience.

Evidence of ethnic Dayak as the first settlers of Madagascar is still preserved in the three tribes that dwelt in the highlands, the Merina, Sihanaka, and Betsileo. All three are still communicate using language similar to Barito language that is widely used in southern Borneo.

The question that still remains in the minds of these researchers is like what the first settlers of this genetic contribution to the current population of Madagascar. To find out, he studied mitochondrial genes obtained from 300 inhabitants of Madagascar and Indonesia 3.000 inhabitants.

Selection of the mitochondria caused the kitchen to save energy in these cells revealed that genes for the mother. Samples genes show similarities between the genomes of Indonesia and Madagascar.

The next job is knowing when and how the ethnicity of Indonesia can reach the island. Computer simulations are used to trace the genealogy of the human genetic Madagascar is currently living up to the past.

The results showed that the population of Madagascar is currently connected to 30 women. These women are expected to become the first settlers around 1,200 years ago, the 28 women in Indonesia and two from Africa.

From these results, Murray believes that stranded Dayak ethnic population is growing rapidly and soon mastered the island. Estimated to have created a large group in a few generations.

Peter Forster at the University of Cambridge points out that the initial population was not pure Indonesian, suggesting the first people arrived in Madagascar via a generation of interbreeding with Africans. His earlier work suggests the DNA of the first population was just 60 per cent Indonesian. However, he studied fewer living Malagasy and analysed shorter sections of DNA – although his analysis included members of four Malagasy ethnic groups, while Cox studied just three.

Cox now wants to repeat his simulations with Y chromosome data to work out how many men were in the first population. "This isn't just a story of the women."

The study were published in the journal Proceedings of the Royal Society B: Biological Sciences.. *** [ANTON WILLIAM | KORAN TEMPO 3833]
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