The Dunkers are a religious group that moved from Germany to Pennsylvania in the 1700sand do not marry outside their community. Today, they differ genetically from their original population and other populations. Which mechanism best explains this?

Two species of frogs belonging to the same genus occasionally mate, but the embryos stopdeveloping after a day and then die. Which of the following mechanisms keep the speciesseparate?

When a population is in Hardy-Weinberg equilibrium, evolutionary forces are acting upon it.

Mutation is the only evolutionary mechanism that ________.

Most Swiss starlings produce four to five eggs in each clutch. Starlings producing fewer or more than this have reduced fitness. Which of the following terms best describes thissituation?

In a population of 10,000, how many babies would you expect to have cystic fibrosis, ahomozygous recessive condition, if the frequency of the dominant allele is 0.7 and thepopulation is at Hardy-Weinberg equilibrium?

Extra Credit (5pts): Earth’s history shows repeated patterns of mass extinction followed by adaptive radiation. Explain how these two processes are connected and how they have shaped biodiversity over time.

A group of birds encounters a new island with varied habitats and unoccupied niches. Whatrole does ecological opportunity play in this situation?

Create a title for your essay. Craft a title that engages the reader’s attention, indicates the essay’s argument, and matches the essay’s tone. Do not simply state the subject or topic of the essay. Do not use a full sentence. Do not use a question. Hint: If you are having trouble creating a title, look through your essay draft and see if you perhaps have a very nice phrase that you could pull out for your title.

22-24 gauge catheters are the most common size IV used in an infant.