Biology- Chapter 16 Evolution

Front

What characteristic did Darwin observe about the finches on the Galapagos Islands?

Back

Darwin observed that the finches had different beak shapes adapted to their specific diets.

Front

What is the term for a random change in the DNA of a gene?

Back

Mutation: A mutation is a change in the DNA sequence that can lead to variations in traits.

Front

What was the name of Darwin's expedition?

Back

Darwin's expedition was called the Voyage of the Beagle.

Front

Who proposed that organisms could change in their lifetime and pass those traits to their offspring?

Back

Jean-Baptiste Lamarck proposed that organisms could change during their lifetime and pass those traits to their offspring.

Front

What best describes the process of evolution?

Back

Evolution is the process by which the traits of a species can change over time.

Front

What is natural selection?

Back

Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.

Front

Define adaptation in the context of evolution.

Back

Adaptation is a trait that helps an organism survive and reproduce in its environment.

Front

What is the significance of genetic variation in evolution?

Back

Genetic variation is crucial for evolution as it provides the raw material for natural selection to act upon.

Front

What is the role of mutations in evolution?

Back

Mutations introduce new genetic variations, which can lead to new traits in a population.

Front

What is the difference between artificial selection and natural selection?

Back

Artificial selection is the process by which humans breed organisms for desired traits, while natural selection occurs without human intervention.