采用Jukes-Cantor 一参模型(替换率α),两核酸序列经过t时间的进化距离是?
A. 2αt
B. 3αt
C. 2*(3αt)
D. 2*(αt)
构建分子进化树的UPGMA方法是加权分组平均方法的简称
A. 对
B. 错
我们观察到两序列间的核苷酸替换数就是两序列在长期进化过程中的实际核苷酸替换数
A. 对
B. 错
Match the pictures to the sentences which best describe them.1 Mateo shows Hector and Mr. Sanchez a tie.2 Hector and Mr. Sanchez are shopping for clothes.3 Mr. Sanchez asks them what they think about the shirt.4 Mateo tells Hector what his job is.