Which of the following statements is true about the Galapagos finches?
a. Because of the different beak shapes, there is little niche overlap.
b. Interspecific competition has eliminated niche overlap.
c. Because of niche overlap, a dominance hierarchy has been established.
d. Intraspecific competition is likely minimal because of the differences in beak shape.
A
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The activity of adenyl cyclase is influenced by
A. the presence of lactose in the environment. B. the phosphotransferase system. C. homoserine lactones. D. None of the choices are correct.
Some of the work with Hawaiian fruit flies illustrated the presence of a
a. prezygotic isolating mechanism, which involved behavioral isolation. b. prezygotic isolating mechanism, which involved gametic isolation. c. prezygotic isolating mechanism, which involved temporal isolation. d. postzygotic isolating mechanism, which involved behavioral isolation. e. postzygotic isolating mechanism, which involved gametic isolation.
In which of the following ways are coral reefs impacted from climate change?
A. Water oxygen levels are decreasing, preventing coral from being able to survive. B. Coral reefs are dying as oceans become more basic. C. Invasive species are making their way into coral reef ecosystems, displacing existing populations. D. Cooling ocean temperatures are preventing the growth of new coral reefs.
Describe a centromere.
What will be an ideal response?