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You are asked to study a new species, and are presented with a miniscule amount of DNA from that species.  If you do not find a way to increase the volume of the DNA sample, you will not be able to work with the sample at all.  Which technique should you use to increase the amount of DNA in the sample?

Echinoderms have an endoskeleton, not an exoskeleton.

Stem cells have indeterminate cleavage.

Traditional and molecular phylogenies disagree on which one of the following issues? 

Some members of Platyhelminthes are parasitic.

Millipedes have two total legs per segment whereas centipedes have just one leg per segment.

Ecdysis is 

The diversification of insects is strongly related to the diversification of predators in the environment.

You are examining a new animal species.  You find that you can pass any line through the body and find equal halves.  What is the best description of this animal?

What does the mesoderm have to do with the designation of a true coelom?