In the 16th century, a Spanish ship explored a Pacific Island that had a small mountain range separating it. Mice that
were on the ship escaped onto the island on both sides of the mountain range. After decades of separation the two
populations developed different numbers of chromosomes, resulting in reproductive isolation that prevented any future
interbreeding. This speciation event is an example of ____.
a. allopatric speciation
b. sympatric speciation
c. the founder effect
d. inbreeding
e. gene flow
ANSWER: a
You might also like to view...
According to ____, environmental pressures caused changes in body parts, which were directed by ____ and passed
onto offspring.
a. Lyell; genetics b. Lamarck; fluida c. Darwin; genetics d. Cuvier; lineages e. Aristotle; fluida
The nutrient canal is indicated by
a. A. b. B. c. C. d. D. e. E.
The level of the oceans is rising due to expansion of water volume stemming from ____.
A. ozone depletion B. global warming C. lost species biodiversity D. increased precipitation E. acid rain
In which type of microscopy do the specimens appear to be three-dimensional (3-D), allowing their external features to be viewed best?
a. Scanning electron microscopy (SEM) b. Transmission electron microscopy (TEM) c. Phase-contrast microscopy d. Darkfield microscopy