Exam 13: How Populations Evolve

During the 1950s,a scientist named Lysenko tried to solve the food shortages in the Soviet Union by breeding wheat that could grow in Siberia.He theorized that if individual wheat plants were exposed to cold,they would develop additional cold tolerance and pass it to their offspring.Based on the ideas of artificial and natural selection,do you think this project worked as planned?

Frequency- dependent selection,as seen in the case of the scale- eating fish in Lake Tanganyika,tends to

Which of the following represents a pair of homologous structures?

Which of the following statements regarding the currently available fossil record is false?

Lyell's book Principles of Geology,which Darwin read on board the H.M.S.Beagle,argued in favor of which of the following concepts?

The ultimate source of all new alleles is

Which statement best describes the mode of selection depicted in the figure?

Large antlers in male elk,which are used for battles between males,are a good example of a trait favored by

Darwin was the first person to draw an evolutionary tree,a diagram that represents

The frequency of homozygous dominant individuals in a population that is in Hardy- Weinberg equilibrium is equal to

If you had to choose,where would you rather get infected with a serious bacterial disease?