Based on this DNA fingerprint, who is guilty of the sexual assault?
1.Suspect 1
2.Suspect 2
3.Neither of the two tested suspects committed the crime.
4.Neither of the suspects can be excluded.
1
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What is one reason why many mutations may be deleterious? (This question ties in information from other chapters.)
A. Because the genetic code has redundancy built in. B. Because if a mutation changes the primary structure of a protein, the protein may no longer work. C. Because the body has no way to detect or correct mutations. D. Most mutations are actually beneficial, not deleterious. E. Any change in the DNA sequence means that DNA no longer functions properly.
Which of the following statements about viral origins
and evolution is NOT true? a. Viruses may be descendants of parasitic cells. b. Viruses may be genetic elements that escaped from cells. c. Viruses may represent a separate evolutionary branch. d. Most viral proteins are unlike any found in cellular organisms. e. Viral genes have no counterparts in cellular organisms.
Saturated fatty acids lack which of the following?
A) a glycerol molecule b) a hydrocarbon chain C) double bonds between carbon atoms D) single bonds between carbon atoms E) energy
A transducing phage
a. cannot infect new host cells. b. is a lysogenic bacteriophage. c. contains fragments of the host chromosome instead of the viral genome. d. has a viral coat made of host proteins.