Evolutionary origin of a group of organisms such as whales or angiosperms.
Systematic affinities of the onychophorans.
Do parasites become less deleterious to their hosts over evolutionary time?
How important was human activity in the major extinctions of the Pleistocene.
Evidence for Cope's Rule.
Conditions favoring sympatric speciation.
Is character release a genuine phenomenon?
An evolutionary tendency in insular animals (e.g. smaller mammals, gigantism, or flightlessness).
Molecular drive as a mechanism for speciation.
The evolutionary significance of introns.
Controversies in human sociobiology.
Advantages and disadvantages of sexual as opposed to asexual means of reproduction.
The neutralist view of genetic polymorphism.
Was there synchrony of extinction at the end of the Cretaceous?
The evolution of altruistic behavior.
Are there evolutionary clocks in the biochemistry of living organisms?
Why has autopolyploidy been less common than allopolyploidy in the evolution of plants?
Use of island biogeography in establishing natural refuges.
Persistence of meiotic drive in populations over evolutionary time.
Can functional evidence be of importance in determining phylogenetic relationships?
Genetic assimilation and the Baldwin Effect.
Were dinosaurs warm-blooded?
Zoogeographic relationships between South America, New Zealand, and Australia.
Effects of Pleistocene climate fluctuations on tropical organisms.
The evolution of eusociality in insects and mammals.
How did flight evolve in birds or insects?