Explain what you think the phrase 'survival of the fittest' means.

Why do mutations in genes affect traits? o a. genes determine what type of mutagens an organism has. o b. genes produce proteins that cause traits. o c. genes affect how many chromosomes an organism has o d. genes code for carbohydrates that influence traits.

Which description provides the best objective summary of the article in the passage?

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes