粗糙脉孢菌7种子囊型归类教学探究

doi:10.16288/j.yczz.19-181

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Hereditas(Beijing) ›› 2019, Vol. 41 ›› Issue (11): 1067-1072.doi: 10.16288/j.yczz.19-181

• Genetics Teaching • Previous Articles

How to deduce the seven basic class asci of ordered tetrads in Neurospora

Chunming Wang,Yingli Sun,Changjun Lin,Mingyu Wang,Yue Niu,Xiaofeng Li,Huyuan Feng

School of Life Sciences, Lanzhou University, Lanzhou 730000, China

Received:2019-06-24 Revised:2019-09-26 Online:2019-11-20 Published:2019-10-08
Supported by:
Supported by the Undergraduate Training Project of National Science Foundation of China Nos.(J1210033);Supported by the Undergraduate Training Project of National Science Foundation of China Nos.(J1210077);and Teaching research project of Lanzhou University

Abstract

Abstract:

Genetic analysis is an important part of undergraduate genetics teaching and tetrad analysis is unique and integral for genetic analysis of fungi. The ordered tetrad in Neurospora is an important material for genetic analysis, which can not only be used to study recombination between genes and centromeres, but also between genes themselves, as well as study the fine cross patterns between non-sister chromatids of homologous chromosomes. However, in textbooks and related professional journals, there is a lack of specific introduction to the induction methods of the seven basic class asci used in two genes analysis. In the present paper, we designed a table presenting the correlation between the three tetrad types (PD, NPD, T) and the four segregation pattern groups (Ⅰ Ⅰ, Ⅱ Ⅱ, Ⅰ Ⅱ, Ⅱ Ⅰ) to visually show the 12 possible combinations (3×4=12). Then five of them were excluded through the "×" symbol and in addition with three comments attached with the table, thus finally we obtained seven basic ascus types. We hope that this analytical method can assist the teaching of ordered tetrad analysis in Neurospora.

Key words: fungus, ordered tetrad, basic classes ascus, tetrad analysis, genetic analysis

Chunming Wang, Yingli Sun, Changjun Lin, Mingyu Wang, Yue Niu, Xiaofeng Li, Huyuan Feng. How to deduce the seven basic class asci of ordered tetrads in Neurospora[J]. Hereditas(Beijing), 2019, 41(11): 1067-1072.

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How to deduce the seven basic class asci of ordered tetrads in Neurospora

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