RNA virus genomes may be either
a. plus sense or minus sense.
b. nonsense or missense.
c. negative or positive.
d. double-stranded or triple-stranded.
Answer: A
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Given the locally unwound double strand above, in which direction does the RNA polymerase move while transcribing DNA?
A) ? along the template DNA strand B) ? along the template DNA strand C) ? along the nontemplate DNA strand D) ? along the nontemplate DNA strand E) ? along the double-stranded DNA
Control of gene expression
_____ allows bacteria to adapt to changing environments. _____ is critical for development in multicellular organisms. _____ allows bacteria to replicate without control. _____ allows multicellular organisms to maintain homeostasis. _____ it stops multicellular organisms functioning as a whole.
N is equal to the initial carrying capacity at
a. A. b. B. c. C. d. D. e. E.
You are a virologist interested in studying the evolution of viral genomes. You are studying two newly isolated viral strains and have sequenced their genomes. You find that the genome of strain 1 contains 25% A, 55% G, 20% C, and 10% T
You report that you have isolated a virus with a single-stranded DNA genome. Based on what evidence can you make this conclusion? (a) single-stranded genomes always have a large percentage of purines (b) using the formula: G – A = C + T (c) Double-stranded genomes have equal amounts of A and T (d) Single-stranded genomes have a higher rate of mutation