title: [A discussion on some problems of "variation of chromosome number" in some books about genetics].
abstract: Some problems related to "variation of chromosome number" in some teaching materials of genetics are presented in this article. These problems are involved in some conceptions such as haploid, chromosome set and aneuploid that are defined unclearly and confusedly in these books.
authors.affiliation: College of Life Science, Shaanxi Normal University, Xi'an 710062, China. zmqhmm@sina.com
authors.forename: Min
authors.initials: M
authors.lastname: Zhang
authors.forename: Wei
authors.initials: W
authors.lastname: Gu