Adaptive Radiation and Evolution on Islands
Why are islands laboratories of evolution? How do islands contribute to adaptive radiation?
Allopatric Speciation and Sympatric Speciation
Contrast allopatric speciation with sympatric speciation. Why is sympatric speciation more likely to occur in plants than animals?
Evolution and Genetics Relating to Roses
We know that all modern roses were developed from the wild five-petal variety. Not only do modern roses have many more petals, but they have a much larger number of chromosomes. Explain how this probably came about.
For each of the following examples, indicate what type of hybridization barrier is in effect. A. Eastern and western meadowlarks have overlapping ranges, but their songs are different. B. Mules are sterile. C. One species of pine trees in California sheds its pollen in February; another species of pine growing in the sa ...continues
Much of the current debate among scientists today is over the tempo and mode of evolution. Describe and contrast gradualism with punctuated equilibrium.
Describe the conditions necessary for fossilization and relate how the location where a fossil is found can be used to determine its age as well as how 14C is used.
DNA is a fundamental molecule in living things. Explain how it can be used to determine evolutionary relationships (establish a phylogenetic tree) between species.
What evidence do we have for the cause of the mass extinction at the end of the Cretaceous? What were two results of this extinction event?
Pangaea and Continental Movement
What was Pangaea? What evidence do we have for continental movement?
Homologous and Analogous Structures
How do homologous and analogous structures differ? Give examples of plants and animals that exhibit each of these.
