Unit #7 Quiz #4

1. Unit #7 Quiz #4 Grade: «grade» Aquatic Science Subject: «date» Date:

2. 1 A group of Atlantic cod migrate to the Pacific & spread their genes to the Pacific population. When considering the Pacific population this is an example of: A genetic immigration B genetic emmigration C genetic drift D founder effect

3. 2 Which of the following is an example of a genetic bottleneck: A A species of darker-colored mice survive predation from owls & falcons, causing the population as a whole to shift to a darker color. B A group of migratory birds stop on an island and never leave. They cease their migration & evolve into their own species. C A group of horses with long necks randomly survive a brush fire that wipes out much of the population. These long-necked horses eventually evolve into giraffes D A trolling net scoops up an entire school of anchovies, reducing the population by a small percent.

4. 3 Which of the following is NOT a factor that favors fossilization: A The species exists in a small population B The organism is small and has a chitin exoskeleton C The organism gets buried under biological snow D The organism lived through several geological time periods

5. 4 Approximately how old is the Earth A 3.6 billion years old B 4.57 billion years old C 5 thousand years old D 22.589 million years old

6. 5 Most genetic mutations A are helpful to a species B are harmful to a species C have no effect on a species D give most species super powers

7. 6 Leopard frogs & Wood frogs live in close proximity to each other & will often mate. The resulting tadpoles only survive a few days prior to death. This is an example of: A Reduced hybrid fertility B Increased hybrid fertility C Reduced hybrid viability D Hybrid breakdown

8. 7 Which of the following situations describes diversifying natural selection: A Kudu are common prey for lions, and the fastest kudu in the group are more likely to survive an attack and pass on their genes. Thus, the population as a whole gets slightly faster with each generation. B A population of gray mice is prey to nocturnal owls. The mice range in color from white to black, with most being gray. These gray mice are most likely to be spotted by the owls & over many generations the mice begin to split into separate species of white mice and black mice. C Horses and zebra will often mate in the wild and produce a hybrid. These offspring are sterile, thus they can never create their own population. D A population of hippo range in size from very small to very large. The smallest rarely pass on their genes due to their inferior stature, while the largest rarely make it to adulthood due to their high caloric demands. Thus, over many generations, the hippos within this population begin to resemble the average-sized hippos from the original population.

9. 8 A Scooter blenny is a type of bottom-feeding fish that is found near coral reefs. Bird-nosed wrasse will live at the upper part of the same coral reef. From this information alone, you can assume these fish are isolated by: A Behavioral isolation B Temporal isolation C Habitat isolation D Hybrid breakdown

10. 9 All of the following are pre-zygotic reproductive barriers EXCEPT: A Temporal isolation B Mechanical barrier C Habitat isolation D Hybrid breakdown

11. 10 Zonkeys & Zorses are the offspring of zebras & horses or zebras & donkeys. These offspring are sterile, meaning they are/have... A Reduced hybrid viability B Reduced hybrid fertility C Gametic isolation D Mechanical isolation