Young male white-crowned sparrows ____ appropriate song, which is related to _______
a. are born with; estrogen
b. are born with; testosterone
c. learn; neuron clusters in the testes
d. learn; neuron clusters in the brain
e. learn; estrogen
D
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The Calvin cycle provides autotrophs the ability to convert inorganic carbon into biomass and generate energy during this process
Indicate whether the statement is true or false.
A scientist studying evolution of peppered moths (Biston betularia) in Michigan observed that the percentage of melanic moths increased by around 2% from 1960-1961. Has evolution occurred in this population?
A. No, because melanism wasn't adaptive at that time. B. No, because the frequency of the melanic moths did not change enough to be considered evolution. C. Yes, because the frequency of the melanic moths in the population changed over time. D. Yes, because the frequency of melanic moths decreased.
Point mutations that cause amino acid replacements are called _____
A. synonymous (silent) mutation B. nonsynonymous (missense) mutation C. nonsense mutation D. stop mutation E. transition mutation
Free-living flatworms belong to the class:A
Monogena. B. Lophotrochozoa. C. Turbellaria. D. Cestoda. E. Chelicera