Khủng long to xác có bộ gene tí hon
Cập nhật: 07:34 12/03/2007 GMT+7
Khi tìm hiểu kích cỡ bộ gene của 31 loài khủng long và chim đã tuyệt chủng, các nhà nghiên cứu tìm thấy những loài ăn thịt như T-rex có bộ gene tương đối nhỏ.
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