The image of the animal shown above caused quite a
media frenzy in recent years due to reports that it
was not extinct. What is it?
a. blue-footed booby
b. ivory billed woodpecker
c. dodo bird
d. red caucaded woodpecker
e. none of these
Answer: b
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Which one of the following, if missing, would usually prevent translation from starting?
A) exon B) cap C) AUG codon D) poly-A tail
Prions ____
a. are more complex than viruses b. have large DNA genomes c. cause neurodegenerative disorders in mammals d. infect plant cells e. encode their own polymerases for nucleic acid replication
The organelles of movement are called:
a. nuclei. b. chloroplasts. c. flagella and cilia. d. mitochondria. e. cytosol.
One similarity between DNA transposons and retrotransposons is that
A) during transposition, both go through an RNA form that is copied back into DNA. B) both can encode an enzyme required for mobilization. C) transposition results in movement of the original transposon to a different place in the genome. D) they both have poly-A segments at one end.