Asked by Marianah Nasir on Jul 17, 2024
Verified
According to the proposed three-domain system,
A) archaea and eukarya are more closely related than either is to the bacteria.
B) archaea and bacteria are more closely related than either is to the eukarya.
C) bacteria and eukarya are more closely related than either is to the archaea.
D) all three groups arose separately.
E) All three groups are equally related.
Three-Domain System
Classification system that places all organisms into one of three large domains—Bacteria, Archaea, and Eukarya.
Archaea
A domain of single-celled microorganisms without a nucleus, distinct from bacteria and eukaryotes, often found in extreme environments.
Eukarya
One of the three domains of life, consisting of organisms with cells characterized by a nucleus enclosed within membranes.
- Identify the key importance of taxonomy and phylogeny in the interpretation of evolutionary ties.
Verified Answer
PB
Paula BogosianJul 21, 2024
Final Answer :
A
Explanation :
The three-domain system, proposed by Carl Woese, divides cellular life forms into archaea, bacteria, and eukarya. It suggests that archaea and eukarya share a more recent common ancestor with each other than either does with bacteria, based on differences in their ribosomal RNA sequences.
Learning Objectives
- Identify the key importance of taxonomy and phylogeny in the interpretation of evolutionary ties.