Chapter 17

Define the following terms: species, speciation, allopatric speciation, and sympatric speciation. Explain how allopatric and sympatric speciation might work, and give a hypothetical example of each.

What is an evolutionary tree? What information does it contain, and how is it read?

A drug called colchicine prevents cell division after the chromosomes have doubled at the start of meiosis. Describe how you would use colchicine to produce a new polyploid plant species.

Explain with a suitable example the outcome if two closely related but physically separated populations are brought together to mate.