For polygenic traits, a smooth curve results when the range of phenotypes is plotted against frequency. If you were to plot the frequencies of two phenotypes of a single-gene trait, you would
end up with a double bar graph Explain why.

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.

a plastic spoon that has a temperature of 78° f is placed into a bowl of soup that has a temperature of 84° f. which of these correctly describes what will happen?

energy as heat moves from the soup to the spoon.