Characteristics shared by primates include
A. large brain size in comparison to body size.
B. grasping hands with opposable thumbs.
C. All of the answer choices are correct.
D. flat nails instead of claws.
E. binocular vision and excellent depth perception.
C. All of the answer choices are correct.
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True or False: At its earliest stages, a logistic growth curve closely resembles an exponential growth curve
A. true B. false
The influenza viruses that infect man usually are derived from a type that could also infect:
a. Horses and sheep b. Cattle and water buffalo c. Chimpanzees and gorillas d. Birds and pigs e. A variety of primates
Although 61 different codons code for amino acids, cells contain fewer than 61 different tRNAs. Why?
A. Although 61 different codons code for amino acids, any given cell contains fewer than 61. B. Because the 5' base on the mRNA codon has some flexibility (wobble); thus, some mRNA codons can pair with more than one tRNA anticodon. C. Because the 5' base on the tRNA anticodon has some flexibility (wobble); thus, some tRNA anticodons can pair with more than one mRNA codon. D. Because each amino acid is coded for by just one codon.
A possible mutagen is
a. UV light b. translocation c. an anticodon d. hemoglobin