Which of the following traits would be least useful in a phylogenetic analysis? a) a trait that is altered easily by small changes in temperature b) a trait that involves genetically inherited behaviors c.) a trait that is detectible only in observations of early development d.) a trait that can be studied only in museum specimens e) all of the above traits would be equally useful in a phylogenetic analysis

Suppose that on a small island off the coast of scotland, 32 percent of the population has blue eyes, which means that these individuals must be homozygous for the blue eye color gene (bb). the only other eye color found on the island is brown, and individuals that are homozygous for the brown eye color gene (bb) or heterozygous (bb) will have brown eyes because brown is the dominant gene. assume this population is in hardy-weinberg equilibrium. if 100 babies are born next year, how many of these would you expect to have brown eyes and be heterozygous? a. 58 b. 49 c. 29 d. 43

The ultimate purpose of respiration: a. inhale 02 and exhale co2 b. place oxygen in the lungs c. place oxygen in the blood d. deliver oxygen to every blood cell

What blood vessels carry blood to the heart? away from the heart?