The use of a molecular clock may be used to indicate relatedness and evolutionary time
A. if nucleic acid changes occur at a fairly constant rate.
B. but is more strongly supported when it can be compared with the fossil record.
C. if nucleic acid changes are neutral and not tied to adaptation.
D. All of the choices are correct.
Answer: D
You might also like to view...
The atomic number corresponds to the number of ________ in a specific element, while the atomic weight corresponds to the number of ________ in a specific element.
A. protons; protons and neutrons B. protons and neutrons; neutrons C. protons; neutrons D. neutrons; protons
The water lost during transpiration is a side effect of the plant's exchange of gases. However, the plant derives some benefit from this water loss in the form of _____
A) increased turgor and increased growth B) mineral transport and increased growth C) evaporative cooling and increased turgor D) evaporative cooling and mineral transport
The first primates with an angled skull base that were probably able to make a wide range of sounds to aid speech were
A) Homo habilis. B) Homo erectus. C) Homo afarensis. D) Homo sapiens.
Examine this diagram. Note the structure of branches connecting groups of organisms. Called a phylogenetic tree, the branches propose relationships among organisms to each other, related to common ancestors. Although the proposed relationships can be described in sentences, the diagram summarizes them visually. Which of the following statements is true based on this diagram?
A. All the organisms in this phylogenetic tree are equally related to one another.
B. The organisms in domain Archaea are more closely related to the organisms in domain Eukarya than those in domain Bacteria.
C. The organisms in kingdom Protista are part of domain Bacteria.
D. All of the answer choices are correct.
E. The organisms in domain Bacteria are more closely related to the organisms in domain Eukarya than those in domain Archaea.