Exam 22: Evolution and Our Heritage

What factors contribute to genetic variation in populations?

________ is the relative number of reproductively viable offspring left by an individual.

As you visit the high desert of southeastern Arizona,you come to a flowing stream that disappears into the sand.You notice that insects are flying up to the moist sand for a drink,but as the flow varies and waves of muddy water wash over the animals,fine soil particles cover them and entomb them.The beginnings of what process have you just witnessed and what might the next steps be?

Astronomers have detected the presence of various chemicals in deep space similar to those thought to have been synthesized in Earth's early atmosphere.The environments where those deep space molecules originated would be most likely to contain ________.

Match each definition in the first column to the correct term in the second column. -Sugar gliders from Australia and flying squirrels from North America are not closely related mammals but they do resemble one another in appearance and locomotion.This would illustrate the phenomenon of ________.

DDT was first used as an insecticide in 1942.Resistance genes existed before this time in houseflies and other insects.By 1970,no farmer would bother using this chemical.Why?

The Abuja family had 10 children by 1950,but due to ill health,there is now only one surviving grandchild.The Bacchus family had 3 children in 1950 and now has 6 grandchildren.Which statement about these families is correct?

If you hear a friend call someone a "Neanderthal," why might it conceivably be a compliment?

With the problems related to fossilization listed in the text,which of these creatures would be least likely to be successfully fossilized?

Which of the following groups has more species?

What anatomical features help primates to live in trees?

Discuss the major trends in hominin evolution.

Which of the following is a correctly written scientific name?

Which of the following is true of the evolution of humans?

The relative number of reproductively viable offspring produced by individuals is called ________.

Different forms of a gene are called ________.

Recently,the bones (not fossils)of a possible new species of humans (in the genus Homo)have been found on an island in Indonesia (an island nation southeast of Asia).These people were alive as recently as 17,000 years ago.According to the information in this chapter,why do you think they probably used tools?

Which of these trends occurred first in hominin evolution?

Plants from the genus Solanum include such common vegetables as potatoes and eggplants.The many species include some plants native to tropical West Africa as well as closely related species native to tropical South America.What might you reasonably conclude?

Match each definition in the first column to the correct term in the second column. -The two-part name that consists of the genus followed by the species name first developed by Carl Linnaeus.