Translation of mRNA into protein always starts at:
A) an AUG codon.
B) the first anticodon on the mRNA.
C) the E site.
D) the A site.
E) a termination codon.
Answer: A
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Within this community, which would be the fittest organisms?
a. The weeds with herbicide resistance because they survive when herbicides are sprayed. b. The weeds without herbicide resistance because they are producing the most surviving offspring. c. Any organism that reproduces is considered fit in the evolutionary sense. d. If herbicide resistance arose due to a mutation, this species would be considered less fit
A SNP that changes the amino acid sequence of an encoded protein is termed
A) synonymous. B) nonsynonymous. C) transliteral. D) mutagenic.
Red-green color blindness is an X-linked recessive trait in humans. What is the probability that a
color-blind woman and a man with normal vision will have a color-blind daughter? a. 100 percent b. 75 percent c. 50 percent d. 25 percent e. 0 percent
Which of these would be considered a cis-regulatory element for a gene?
A. Methylation of DNA preventing transcription B. A region of DNA sequence upstream of a gene where transcription factors bind C. A DNA binding protein that functions to repress transcription D. A protein that binds to an enhancer to activate gene expression E. a ribosome that translates a mRNA sequence to produce a transcription factor