Multiple Choice
The minimum age of the LUCA (last unique common ancestor) is the age of the oldest fossils that can be identified with certainty as close relatives of present-day prokaryotes and eukaryotes.Such fossils are about ________.
A) 3.8 billion years old
B) 2 billion years old
C) 542 million years old
D) 3.28 billion years old
E) 65 million years old
Correct Answer:

Verified
Correct Answer:
Verified
Q21: Important molecular discoveries in the 1980s have
Q22: In attempting to construct a universal phylogeny,researchers
Q23: The gene that encodes small-subunit ribosomal RNA
Q24: Fossil evidence suggests that the latest possible
Q25: It is now thought that the last
Q26: The explanation linking viruses to the origin
Q27: Analysis of the sequences of the small
Q28: The authors of your textbook suggest that,"for
Q29: Could a varying,self-replicating population of RNA molecules
Q31: The earliest fossil records of bacteria-like organisms,dated