Which time period of Earth represents when evolution was progressing at the most rapid rate, as evidenced by fossils
such as those of the Burgess Shale?
a. Silurian period
b. Cambrian period
c. Devonian period
d. Ordovician period
e. Carboniferous period
b
You might also like to view...
What molecules in the spliceosome catalyze the intron removal reactions?
A) RNA polymerases B) ribozymes C) tRNA D) introns
The Public Health Security and Bioterrorism Preparedness and Response Act identifies select agents and identifies a Tier 1 subset of particularly hazardous microorganisms.
Answer the following statement true (T) or false (F)
What feature of both true mosses and ferns makes it most surprising that they can survive for many generations in dry deserts?
A) flagellated sperm B) lack of vascular tissues C) lack of true roots D) lack of cuticle
A researcher determined that a strain of E. coli is producing a shortened version of a protein required for glucose metabolism. What type of mutation could be responsible for this shorter than normal protein?
A. missense mutation B. silent mutation C. nonsense mutation D. sense mutation E. frameshift mutation