#Question id: 7146
#Unit 5. Developmental Biology
In Drosophila, the neuroectoderm is located ventrally during gastrulation, while in mice or frogs, the neuroectoderm is located dorsally. Which statement best describes how the two systems are similar or different?
#Question id: 11419
#Unit 10. Ecological Principles
There are more species in tropical areas than in places more distant from the equator. This is probably a result of
a) more predators and parasites
b) more dispersed annual solar radiation compared to the poles
c) more frequent ecological disturbances over a longer time span
d) a longer time frame without disturbances for evolution and speciation
#Question id: 4612
#Unit 11. Evolution and Behavior
The greatest number of endemic species is expected in environments that are ________.
#Question id: 18855
#Unit 13. Methods in Biology
#Question id: 3367
#Unit 11. Evolution and Behavior
The largest unit within which gene flow can readily occur is a