Which of these statements is true of cladograms?单项选择题

A

They illustrate hypothesised evolutionary relationships based on shared characteristics

B

Longer branches always represent a greater amount of evolutionary change

C

The position of a species at the top of a cladogram indicates it is the most evolved

D

Cladograms show the exact time when each species first appeared on Earth

登录即可查看完整答案

我们收录了全球超50000道真实原题与详细解析,现在登录,立即获得答案。

类似问题

Scientists are analyzing DNA sequences for the same gene from three different species. Which cladogram most accurately reflects the relationship between the three species N, O, P? Species N: A A C T A G C G C G A T Species O: A A C T A G C G C C A T Species P: T T C T A G C G G T A T

Which of the following trees corresponds to a potential parse of the ambiguous sentence below, with correct syntactic categories? Some diagnostics are provided.

Which of the following sentences contain two non-finite verbs? Select all that apply.

The syntactic head of a phrase is the most important element of a phrase and whose category defines the phrase's [ Select ] exponent movement distribution head . Single words or phrases that form part of a phrase but are not the head are called [ Select ] head complement dependent argument modifier . This classification can be further divided into: 1) [ Select ] arguments modifiers complements dependents heads , which have a closer relationship to the head, and are not easily reordered and 2) [ Select ] arguments complements dependents heads modifiers , which have a much looser connection to the head and can often be reordered with other [ Select ] heads modifiers complements dependents arguments . Consider the concrete example: "a strong cup of coffee" and the following diagnostics. In this example, "cup" is a [ Select ] dependent complement argument head modifier , "of coffee" is a [ Select ] argument dependent complement head modifier , "strong" is a [ Select ] argument modifier complement head dependent , and "a" is a [ Select ] modifier dependent head dependent complement .

更多留学生实用工具

加入我们，立即解锁 海量真题 与 独家解析，让复习快人一步！