What is the correct definition of macroevolution?
a. it is evolutionary change on a large scale often following major global changes and mass extinction
b. it is evolutionary change due to dominant modification that enriches a gene pool over very short periods of time
c. it is evolution change due to recessive modification that enriches a gene pool over very short periods of time

Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees

Which of the following matches the organisms described with the correct domain? a. archaea--multicellular, eukaryotic organisms that do not have cell walls b. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sources c. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycan d. bacteria--unicellular, eukaryotic organisms that always lack cell walls

Modern sea star larvae resemble some primitive vertebrate larvae. this similarity may suggest that primitive vertebrates