Compare and contrast proteins and nucleic acids. Then, compare and contrast their respective monomers, amino acids, and nucleotides.

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.

Identify and describe the three ways that mutations affect organisms.

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?