Chapter 16 Natural Selection Review

According to Malthus, what factors limit population growth? (This relates to both Chapter 16.2 & 16.3)

• All of these are factors Malthus identified would limit population growth
• Overcrowding
• Lack of food
• War
• Famine

Sea turtles usually lay over 100 eggs, but less than ten of those will actually make it to adulthood because the baby turtles will be forced to compete with each other for resources like food. This is an example of which principle of natural selection

• Adaptation
• Overproduction
• Descent with modification
• Variation

Which of the following is an important concept in Darwin's Theory of evolution by natural selection? I.E. After many generations, living species evolved with evolutionary adaptations from common ancestors.

• descent with modification
• homologous molecules
• processes that change the surface of the earth
• the tendency towards perfection

What process produced the two different types of beaks shown?

• artificial selection
• natural selection
• geographical distribution
• disuse of the beak (leading to it being a vestigial structure)
• An individually Acquired Characteristic

The large ground finch obtains food by cracking seeds. It's short, strong beak is an example of...?

• the struggle for existance
• the tendency toward perfection
• an adaptation
• a vestigial organ

Which of the following does NOT provide evidence for evolution?

• Fossil records
• The function of an organism's structures
• Geographical distribution of living things
• Homologous structures of living organisms

1 of 2 patterns. An example is similar, ground-dwelling birds that inhabit similar grasslands in Europe, Australia, and Africa. They likely had similar selection pressures despite different body structures. This likely resulted in similar organisms despite different ancestors. This best describes what concept?

• Closely related but different
• Distantly related but similar
• Fossils
• Vestigial structures
• Homologous Molecules

See the attached image as a general reference. A bird's wing are homologous to a(n)...?

• fish's tailfin
• alligator's claws
• horse's front legs
• mosquito's wings

See the attached image as a general reference. A bird's wing are analogous to a(n)...?

• fish's tailfin
• alligator's claws
• horse's front legs
• mosquito's wings

How do the molecular genetics of DNA & RNA provide evidence for common descent?

• It's a universal code that shows that all living species descended from an ancient common ancestor
• Because many organisms start off as similar looking embryonic fetuses
• They always show structures that are inherited from ancestors but have often lost much or all of their original function
• Because they are almost always preserved remains or traces of ancient organisms