Modern Homo sapiens arose in
A. Africa.
B. North America.
C. Europe, the Neander Valley.
D. Asia.
Answer: A
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What would result from a single nucleotide deletion (point mutation) within the coding sequence of a structural gene?
A. a silent point mutation with no deleterious effects B. a missense point mutation resulting in the change of one amino acid C. a nonsense point mutation resulting in the generation of a premature stop codon D. a frameshift mutation, producing a different amino acid sequence altogether E. All of the choices are possible.
Four of the five answers listed below are compounds associated with anaerobic pathways. Select the exception
a. pyruvate b. lactic acid c. ethanol d. oxaloacetate e. phosphoglyceraldehyde (PGAL)
Population size declines when ________
a. the sum of births and immigration is less than the sum of deaths and emigration b. death rates are higher than birth rates c. immigration is higher than emigration d. the value for r is greater than 0
In correct order, the three stages of translation are
a. initiation, replication, and termination. b. elongation, peptide bond formation, and codon-anticodon pairing. c. initiation, chain elongation, and termination. d. termination, initiation, and replication. e. initiation, codon-anticodon pairing, and termination.