Exam 14: How Biological Diversity Evolves

The science of naming,identifying,and classifying organisms is called ________.

Characid fishes are found naturally only in South America and Africa.Fossils of these fish are not found on any other continents.What is the most likely explanation of this distribution pattern?

Read the following scenario to answer the following questions. As part of a semester-long biology field research course, you are studying reproductive barriers among four different frog species. Your goal is to determine what type of reproductive barrier likely causes the gene pools of the four different frog species to be isolated. These four species share common geographic habitats and are both anatomically and gametically compatible. Your research professor gives you the following figure to consider. After studying the figure, answer the questions that follow. -Based on the independent and dependent variables represented in the figure and the information you have about common geographic habitats as well as anatomical and gametic compatibility of the four frog species,you initially conclude that reproductive barriers may be due to ________.

Uranium-235,with a half-life of 713,000,000 years,decays to lead-207.If a rock sample is determined to have one-quarter of the uranium-235 content it had when it formed,the age of the rock sample can be estimated to be approximately ________ years old.

The type of reproductive barrier that occurs when two species mate but produce sterile hybrids is referred to as ________.

Analogous structures are evidence of ________.