There exists mutual improvement and restriction between regional tourism industry and the development of the tourism subject. With the rapid development of the tourism industry, it has set up the tourism program in the universities of Yunnan Province. However, the regional development of the construction of tourism subject is not balanced and its…

This article describes an easy and cheap laboratory exercise for students to discover their own mitochondrial haplogroup. Students use buccal swabs to obtain mucosa cells as noninvasive tissue samples, extract DNA, and with a simple polymerase chain reaction-restriction fragment length polymorphism analysis they can obtain DNA fragments of…