Chapter 2 & 3 Quiz - Natural Selection (Adv)

What about a population is changing over time as it evolves by natural selection?

• The distribution of traits in a population.

• The attractive features in a population.

• The acquired traits of a population.

• The population does not change, individuals do.

New traits introduced to a population by mutations are always adaptive.

• True

• False

How can an individual be born with an adaptive trait?

• The individual chooses to have the adaptive trait at birth.

• The individual develops the adaptive trait when they need to.

• Parents had genes for the adaptive trait and passed them to their offspring.

• The parents choose for the offspring to have genes for the adaptive trait.

Natural selection acts on ____________________ among the individuals in a population.

• variation

• strength

• intelligence

• mutations

Reproduction always results in adaptive traits.

• True

• False

Process by which better adapted organisms survive to pass their traits on to the next generation.

• evolution

• extinction

• artificial selection

• natural selection

Darwin and ________________ each independently discovered species descend from other species.

• Lamarck

• Steno

• Wallace

• Mendel

A mutation results in faster reflexes. After many generations most of the population has this trait. What caused this?

• The mutation was contagious.

• The offspring learned to copy this trait.

• Individuals developed faster reflexes in order to survive.

• The mutation was an adaptive trait for this environment.

Which of the following is a non-adaptive trait?

• Having thick fur in a cold environment.

• Being able to store a low amount of water where there is low rainfall.

• Being able to camouflage to avoid predators.

• Having a strong beak to break open hard seeds.

A cheetah population's variation is decreased due to predators, disease and drought. Which of the following is likely?

• The population will be less likely to adapt to environmental change.

• Cheetahs have a greater chance of finding a mate.

• The survival rate of the young cheetahs will increase.

• Individuals cheetahs will develop the traits they need to survive.