The advantages of DNA vaccines include
a. no possibility of infection.
b. activation of T and B cells.
c. targeted immune response.
d. all of the above.
Answer: D
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Females have two copies of the X chromosome, so they can be homozygous or heterozygous for any genes found on the X chromosome. Males have only one copy of the X chromosome. What term is used to describe this inheritance state?
What will be an ideal response?
Any genetic differences between individuals in a population are called
A. polymorphisms. B. markers. C. alleles. D. SNPs.
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
In which period of evolution, in the Cenozoic era, would you find Homo sapiens?
A. Cretaceous B. Neoprene C. Jurassic D. Quarternary E. Paleogene