The origin and evolution of chicken

Chickens, also known as domestic chickens and jungle fowl, are a common type of poultry. They originated in Southeast Asia, and their earliest ancestors can be traced back to modern Vietnam and Thailand.

Chickens have a relatively simple evolutionary history, and were domesticated by humans around 8000 BC. The earliest domesticated chickens were mainly used for eggs and meat. Later, with the development of human agriculture, chickens became an important livestock breed and were widely distributed around the world.

Today's chickens are mainly divided into two types: broilers and laying hens. Broilers are larger in size and have plump meat, while laying hens are mainly used to produce high-quality eggs.

It is worth noting that although the evolutionary history of chickens is relatively simple, the complexity of the chicken genome is similar to that of humans, and its genome has been fully sequenced. This makes chickens one of the ideal model organisms for many researchers to conduct genetic and genetic research.

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