Which of the following is an example of one codon?
A) CATT
B) GCCATT
C) CAG
D) CCGUAA
Answer: C
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The disease, sickle-cell anemia is common in malaria-infested areas because individuals that are heterozygous for the gene (AS) have enhanced resistance to malaria over normal individuals (AA). Individuals with severe sickle-cell anemia (SS) usually die before reproduction. If this population moves to an area without malaria, what will happen to the allele frequency of the A allele over time?
A. It will go up because there is no sickle cell anemia. B. It will go down because there is no malaria. C. It will go down because there is no sickle cell anemia. D. It will go up because there is no malaria.
A species that has a disproportionately large effect on community structure is known as a(n) ____
a. keystone species
b. parasitic species c. exotic species d. native species e. pioneer species
According to the Lotka-Volterra equations, which of the following is not an expected outcome of competitive interactions between two species?
A) Species 1 drives species 2 to extinction. B) Species 2 drives species 1 to extinction. C) Both species coexist. D) The populations of both species increase to infinity.
The pancreas is involved in the digestion of _____. I) protein II) fat III) nucleic acids IV) carbohydrates
A) I and III B) I, II, and IV C) II, III, and IV D) I, II, III, and IV