A fatty acid has along, nonpolar hydrocarbon chain, but its end is polar or negatively charged because of its carboxyl group. Explain how the triglyceride that is formed can be neutral and nonpolar. The enzyme tyrosinase produces dark coat pigment in northern seals and Arctic foxes. However it only functions in cold temperatures. Baby seals are born in the winter and camouflaged white.
Arctic foxes are dark in the summer and white in the winter.
Label a diagram of the fern life cycle to illustrate alternation of generation. E. List 4 ways recombination can occur in vertebrates. F. A woman may be color-blind in one eye but have normal color vision in the other eye. Account for this phenomenon. G. Discuss the two primary roles played by the prokaryotes.