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BIO 212 Final Exam Questions with Correct Answers.
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BIO 212 Final Exam Questions with Correct Answers.
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BIO 212 Final Exam Questions with Correct AnswersThe first foxes to colonize this environment would have had [x] fur. During reproduction however, a [y] might occur that produces one or a few offspring with [z] fur, unlike their siblings. The differences in fur coat in this generation are an example of [a], one of the three requirements for [b] to occur. With the constantly hot weather, not all siblings survived until adulthood; however, those with [c] coats likely had a better chance of surviving and [d] because of their coats. This difference in [e] between foxes with different coat types is an example of another of those three requirements. Each generation, more and more foxes would then be born with [f] fur, demonstrating that this trait is [g] between parents and offspring, the final of those three requirements. This process, continued over many more generations, would eventually lead to the entire population of desert foxes exhibiting this trait (as is the
ca Correct Answer-thick, mutation, thin, variability, natural selection, thin, reproducing, fitness, thin, heritable, lower, adaptation
The variation in pattern and color among different types of swallowtail butterflies is best described as an example of: Correct Answer-Species Diversity
You are studying a series of islands in the Pacific Ocean and the lizards living on them. Two unrelated taxonomic families of lizards (climbing lizards and canopy lizards) appear to have colonized the islands about 10
million years ago. Given this scenario, which of the following would best fit as an example of homology in this system? Correct Answer-
Large toepads in two species of climbing lizard Gene flow between two populations generally leads to evolution in Correct Answer-The receiving population only
According to Darwin, adaptations Correct Answer-arise via natural selection
Unlike natural selection, artificial selection Correct Answer-Involves traits directly chosen to survive/reproduce by the selective pressure
Sources of trait variation important for natural selection came arise from Correct Answer-Mutation, Gene Arrangement, Reproduction
The shift in frequency of Tawny owl populations from mostly grey- to mostly brown-feathered phenotypes over time as winter snow depth decreased is an example of Correct Answer-Microevolution
The shift in frequency of rock pocket mice in New Mexico as they colonized lava flow environments is best described as an example of? Correct Answer-Directional Selection
A pregnant sharp-scaled snake suddenly finds itself on a deserted island covered in sand and no plant life. In its natural environment, the snake has trouble moving on the ground without smooth scales. However, it spent most of its time in bushes where it would hunt leaping lizards. Unlike on the ground, its sharp scales help it move fast between branches (and hold onto them as well) when it hunted its prey. On the island, however, the only lizard prey are sand swimmers, which move on the ground and live deep inside the loose sand. How would Lamarck suggest the snake species might persist in this new environment? Correct
Answer-the parent snake would quickly develop smoother scales and pass that trait down to its offspring
Predator prey examples of natural selection are common. In class we used a cartoon example of crows eating beetles that varied in color (brown versus green) living on a brown background (copied below). Based on this example and what we covered in class about evolution by natural selection, which of the following best describes the selection pressure in this example? Correct Answer-the birds are eating the green beetles because they are easier to see than the brown beetles
A dark-feathered ground-dwelling bird population suddenly find themselves in an open, light-colored field. Given what you know about evolution thus far, if a mutation occurs in their offspring, it is more likely to produce: Correct Answer-Neither; any feather color outcome is possible
The stickleback fish example from class taught us, among other things, that once a trait is adaptive, it is adaptive in all environments a species might experience. Correct Answer-False
Bluegill fish exhibit _______________ selection, whereby both smaller and larger males have higher fitness than intermediately-sized fish. Correct Answer-disruptive Although similar to lizards on Caribbean islands, lizards on the Galapagos islands are more closely related to species in nearby South America, a claim which is supported by both the fossil record and __________________ evidence. Correct Answer-Biogeography
______________ argued that adaptation and evolution are closely-
related processes. Correct Answer-Darwin
__________________________ occurs on a scale that transcends species boundaries and is typically studied with respect to the formation of new species. Correct Answer-Macroevolution
The forelimbs of all mammals---from cats to humans to bats-- all show the same arrangement of bones, an example of _____________________. Correct Answer-homology
One of the four sources of evidence for evolution that, according to Cuvier, merely represents the outcome of frequent catastrophes Correct Answer-The fossil record
Of the three requirements for natural selection, only ____________ is also required for genetic drift to impact a population. Correct Answer-
variability
________________________ is an inherited characteristic that increases
the chances of survival and reproduction for an individual in a certain environment Correct Answer-adaptation
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