Multiple Choice
Molecular data can be used to assess relationships among the major groups of living organisms whose common ancestors lived millions or billions of years ago. Similar techniques can be used to assess relationships among populations within a species. How can molecular techniques be useful for such varied comparisons?
A) Studying the relationships among different populations of a single species can be just as effective as studying the relationships of major biological groups if you look at a lot more genes.
B) The same data can be used for any comparison with equal efficiency.
C) Faster-evolving gene sequences provide better data for comparisons among close relatives, whereas very slowly evolving sequences work best for distantly related taxa.
D) The relationships between very different groups such as bacteria and whales are assessed using mtDNA sequences, whereas rRNA sequences are used for very closely related groups.
Correct Answer:

Verified
Correct Answer:
Verified
Q3: Which of the following would violate the
Q13: The earliest known land plants date to
Q15: Some RNA molecules can function like enzymes.
Q15: The earliest discovered fossils are of _
Q17: The technique called radiometric dating is based
Q20: How do scientists calibrate a molecular clock
Q22: In the axolotl, development is altered. Adult
Q23: Miller was the first to show that<br>A)amino
Q32: In mammals, the presence of four limbs
Q77: The findings of Pasteur and others have