#Question id: 18580
#Unit 7. System Physiology – Animal
#Question id: 24207
#Unit 4. Cell Communication and Cell Signaling
#Question id: 1370
#Unit 4. Cell Communication and Cell Signaling
H. V. Wilson worked with sponges to gain some insight into exactly what was responsible for holding adjacent cells together. He exposed two species of differently pigmented sponges to a chemical that disrupted intercellular junctions, and the cells of the sponges dissociated. Wilson then mixed the cells of the two species and removed the chemical that caused the cells to dissociate. Wilson found that the sponges reassembled into two separate species. The cells from one species did not interact or form associations with the cells of the other species.
How do you explain the results of Wilson's experiments?
#Question id: 4714
#Unit 11. Evolution and Behavior
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: 12710
#Unit 8. Inheritance Biology