会议论文详细信息
International Seminar on Mathematics, Science, and Computer Science Education 2016
Undergraduate Students' Difficulties in Reading and Constructing Phylogenetic Tree
数学;自然科学;计算机科学
Sa'Adah, S.^1,2 ; Tapilouw, F.S.^1 ; Hidayat, T.^1
Biology Department, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung
40154, Indonesia^1
Jalan A.H. Nasution No. 105, Cipadung, Cibiru, Kota Bandung
40614, Indonesia^2
关键词: Communication tools;    Evolutionary relationships;    Learning difficulties;    Open-ended questions;    Phylogenetic trees;    Reflective journals;    Undergraduate students;    Visual representations;   
Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/812/1/012032/pdf
DOI  :  10.1088/1742-6596/812/1/012032
来源: IOP
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【 摘 要 】

Representation is a very important communication tool to communicate scientific concepts. Biologists produce phylogenetic representation to express their understanding of evolutionary relationships. The phylogenetic tree is visual representation depict a hypothesis about the evolutionary relationship and widely used in the biological sciences. Phylogenetic tree currently growing for many disciplines in biology. Consequently, learning about phylogenetic tree become an important part of biological education and an interesting area for biology education research. However, research showed many students often struggle with interpreting the information that phylogenetic trees depict. The purpose of this study was to investigate undergraduate students' difficulties in reading and constructing a phylogenetic tree. The method of this study is a descriptive method. In this study, we used questionnaires, interviews, multiple choice and open-ended questions, reflective journals and observations. The findings showed students experiencing difficulties, especially in constructing a phylogenetic tree. The students' responds indicated that main reasons for difficulties in constructing a phylogenetic tree are difficult to placing taxa in a phylogenetic tree based on the data provided so that the phylogenetic tree constructed does not describe the actual evolutionary relationship (incorrect relatedness). Students also have difficulties in determining the sister group, character synapomorphy, autapomorphy from data provided (character table) and comparing among phylogenetic tree. According to them building the phylogenetic tree is more difficult than reading the phylogenetic tree. Finding this studies provide information to undergraduate instructor and students to overcome learning difficulties of reading and constructing phylogenetic tree.

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