Deduce why viruses are excluded from the ribosomal RNA-based tree of life.
A. Some viruses contain multiple strands of RNA.
B. Their genetic elements cannot be sequenced.
C. They can infect other organisms, which complicates the genetic comparisons.
D. They lack ribosomal RNA.
Answer:D
Deduce why viruses are excluded from the ribosomal RNA-based tree of life.
A. Some viruses contain multiple strands of RNA. B. Their genetic elements cannot be sequenced. C. They can infect other organisms, which complicates the genetic comparisons. D. They lack ribosomal RNA.