BIOL 1202 Chapter : Chapter 22A Pretest
Document Summary
Chapter 22a pre-test questions: which of the following observations led to darwin"s major inferences, a. Members of a population vary in their heritable traits: a. Although organisms can produce huge numbers of offspring, many of these offspring do not survive: a group of small fish live in a lake with a uniformly light-brown sandy bottom. Most of the fish are light brown, but about 10% are mottled. This fish species is often prey for large birds that live on the shore. A construction company dumps a load of gravel in the bottom of the lake, giving it a mottled appearance. Which of these statements presents the most accurate prediction of what will happen to this fish population: a. The proportion of mottled fish will increase over time: the mottled fish will tend to escape predation because they are camouflaged against the mottled lake bottom.
