Evolution Review

What word describes a trait that helps an organism survive in its environment?

• natural selection

• mutation

• camouflage

• adaptation

Almost all adaptations started off as?

• selective breeding

• physiological

• structural

• mutations

Why are advantageous or beneficial traits more likely to be passed onto offspring?

• Because those traits make them more likely to survive and reproduce.

• Because those traits come from dominant alleles.

• Because those traits come from recessive alleles.

• Because those traits are acquired phenotypes.

Structures with the same bone structure but different functions (jobs) suggest that organisms share a common ancestry. What are these structures called?

• vestigial structures

• homologous structures

• adaptive radiation

• fossil

Which of the following is an example of a vestigial structure?

• the wings of a red-tailed hawk
• the hind limbs of a house cat
• the fins of sharks
• the tailbone of a human

Two organisms that are closely related but not clones would have...

• very similar DNA sequences

• exactly the same DNA sequences

• no proteins in common

• completely different DNA sequences

What does Darwin's theory of evolution suggest?

• species change over time
• extinct species are not related to living species
• different species can interbreed
• animals that look alike are most closely related

In a population of ladybugs, black bugs are more successful in escaping predators. Overtime, this gene becomes more popular in the population and the ladybug population loses its red color. This is an example of?

• Natural Selection

• Mutation

• Genetic Drift

• Gene Flow

Which statement best describes the process of evolution?

• Populations can survive in different locations on earth
• Environmental conditions limit the number of species on Earth
• Populations grow when resources are abundant
• The traits of a species can change over time

____________ believed that those organisms that were best suited for their environment would survive and pass on their beneficial traits to their offspring. 

• Darwin
• Lamarck
• Watson
• Mendel