In a study of tree dispersion in a forest, we divided the forest into 1 sq km grid cells, choose 50 of them at random, and counted the number of trees in each cell. The means to variance ratio of the counts of trees per cell was much less than 1. What does this tell us about the spatial distribution of the trees?

#Question id: 4610

#Section 2: Evolution

It has been observed that organisms on islands are different from, but closely related to, similar forms found on the nearest continent. This is taken as evidence that ________.

#Question id: 3386

#Section 2: Evolution

Which statement represents the best explanation for the observation that the nuclear DNA of wolves and domestic dogs has a very high degree of homology?

a) Dogs and wolves have very similar morphologies.

b) Convergent evolution has occurred.

c) Dogs and wolves not shared more recent common ancestor

d) Dogs and wolves shared a more recent common ancestor

#Question id: 4699

#Section 2: Evolution

The theory of evolution is most accurately described as

#Question id: 11169

#Section 2: Evolution

The viceroy butterfly (limenitis archippus) resembles the queen butterfly (danaus gilippus), a species toxic to birds because of alkaloids it stores during larval development from the milkweeds it feeds upon. The viceroy butterfly is an example of what kind of defense against predation?

#Question id: 16783

#Section 3: Mathematics and Quantitative Ecology