In the stomachs of ruminants, such as cows, certain microbes digest cellulose, a material the cow cannot digest itself. This interaction between cows and microbes represents an example of

#Question id: 12372

#Section 1: Ecology

#Question id: 4576

#Section 2: Evolution

Which of the following pairs of structures is least likely to represent homology?

#Question id: 8287

#Section 2: Evolution

The following phylogeny shows six living species (a-f) and five ancestral (now extinct) species (#1-5). If the phylogeny had been developed on the basis of similarities in bone structure, which of the following predictions would you make in terms of the structure of a particular enzyme?

#Question id: 4714

#Section 2: Evolution

After the drought of 1977, researchers hypothesized that on the Galápagos Island Daphne Major, medium ground finches with large, deep beaks survived better than those with smaller beaks because they could more easily crack and eat the tough Tribulus cistoides fruits. A tourist company sets up reliable feeding stations with a variety of bird seeds (different types and sizes) so that tourists can get a better look at the finches. Which of these events is now most likely to occur to finch beaks on this island?

#Question id: 7499

#General Aptitude