A geneticist was able to reconstruct a sequence of mitochondrial DNA of a prehistoric insect that was encased in amber. A segment of this DNA in Species A was found to have the sequence AGGTCCTAAG. This segment of DNA has had one mutation every 100 million years. Species B has the DNA sequence AGGTCCGAAG. How many years ago did these species diverge from a common ancestor? 1,000,000 years 200,000 years 50,000,000 years 60,000 years Question 32(Multiple Choice Worth 2 points) (04.04 MC) Zebra mussels were first discovered in North America in the Great Lakes in 1988. This invasive species eats phytoplankton and other microscopic organisms in fresh water. What would be the most likely effect if zebra mussels are introduced into a local fresh water lake? The ecosystem would benefit from the increased competition for food and increased diversity. The ecosystem would be harmed as other phytoplankton-eating organisms would have less to eat. The zebra mussels would only affect the lake if it already contained another species of mussels. The zebra mussels would benefit the lake, especially species higher up on the food chain. Question 33(Multiple Choice Worth 3 points) (04.05 MC) How would populations be impacted by climate change from increased greenhouse gases? Areas that experience droughts would experience increased precipitation. There would be an increase in yield for crops from expanding drought areas. Growing seasons would be altered for crops. Water shortages would no longer be an issue. Question 34(Multiple Choice Worth 2 points) (04.01 MC) Which of the following explains the role of fungi and slime molds as pictured in the rainforest food web shown below? Diagram for a rainforest food web. The food web contains the following organisms, jaguar, parrot, python, frog, chimpanzee, fruit bat, insects, banana plant, fungi, and slime molds. The fungi and slime molds are at the bottom of the web and connected to the remaining organisms in the food web. The banana plant is connected to the fungi, sli