Ancient DNA research and reconstruction of the history of animal evolution

Cai Dawei, School of Archeology, Jilin University, and his team and Jiang Yu and his team in the field of Animal DNA research in Malaysia's Animal DNA research field. Related research results were recently published in the world's top comprehensive journal "ELIFE" magazine. Essence

For the first time in the world, this result has obtained high -quality whole genome data of the exterminating horses Austrian Ao Shima. The fourth subordinate outside the genus still exists in the era of Chinese bronze. It has updated our understanding of early Chinese Mustang and provided important clues for the origin and domestication research of Chinese family horses.

The origin and domestication research of Chinese family horses has always been the forefront and hot science issues that the international academic circles are concerned. Whether horses in the Longshan period have been domesticated in China have been controversial. Cai Dawei and his team have fully carried out the whole of the ancient horses unearthed from the Longshan to Bronze Age (since 3500 years since 3500 years since 3500 years since 3500 years). Genome analysis confirms that these ancient horses belong to the extinction Avar horse, and thus deny the assertion of Austrian extinction in the late end of the world -the turn of the new world (about 12,000 years ago). It was pushed back for nearly 8500 years.

The study further evaluated the size of Ao Shima's prehistoric group, showing that Austruma reached the peak of the group scale about 74,000 years away, and then accompanied several major climate changes (especially the last ice period) and humans in Europe in Europe The large -scale expansion of the Asian continent. The number of Ao Mama has continued to decline under human prey, and it has stabilized 13,000 years ago. Study for the first time, it was confirmed that Austrum still survived in the bronze era, but he had not experienced any domestication, and the number of populations was quite limited, which can be regarded as a precursor to its extinction. Due to the small shape of the horse, from the horse and the donkey, it is easily identified as a donkey in shape. This research provides new clues for animal archeologists. Provided important reference.

It is reported that Cai Dawei and his team have recently found that two samples belong to the extinction of Ao Shima in the Jilin Shuangliao Dajinshan site (late Warring States Period -early Western Han Dynasty), which further rewritten the extinction time of Ao Shima.

Author: Jilin Daily All Media Reporter Bi Weilin Zhang Huiyong

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