Bio: 25% Unit 6 -Review: Evolution - Notes 1 &2

What is the process of biological change in populations over time that makes descendants genetically different from their ancestors called?

What does macroevolution refer to?

• Changes within a single population

• Evolution affecting changes in species across populations

• The development of new species

• Small scale genetic variations

What did Charles Darwin develop as a result of his observations during his voyage to the Galapagos Islands?

• Theory of relativity

• Theory of natural selection

• Theory of quantum mechanics

• Theory of gravitation

What did Charles Darwin observe about the species on different islands of the Galapagos?

• They were all identical

• They varied and had specific characteristics for each island

• They were imported from other parts of the world

• They could speak different languages

What does the term "Natural Selection" refer to in the context of Charles Darwin's theory?

• The process by which certain laws of nature select organisms to survive based on random choice.

• The idea that organisms with beneficial traits are more likely to survive and reproduce.

• The belief that all organisms have an equal chance of survival regardless of their genetic traits.

• The theory that organisms intentionally select their traits to adapt to the environment.

What is meant by "Survival of the fittest" in Darwin's theory?

• The strongest and largest organisms are always the ones that survive.

• Only the fastest organisms will survive in their environment.

• Organisms that are best adapted to their environment are more likely to survive and reproduce.

• Survival is determined by the ability to find food fastest.

Which of the following is NOT a factor that Darwin's theory of natural selection is based on?

• Overproduction of offspring

• Variation among species

• Adaptation through learning

• Descent with modification

What does the overproduction of offspring lead to in a natural environment according to the principles of biology?

• Decreased competition for resources

• Increased cooperation among species

• Increased competition for limited resources

• Stabilization of the ecosystem without competition

What is described as the ultimate source of variation in organisms according to the image?

• Genetic recombination

• Migration

• Random mutations

• Environmental factors

Which process during meiosis is mentioned as a source of variation?

• Mitosis

• Crossing over

• Duplication

• Transcription