16 Questions
In a population of rabbits, some individuals have a light fur color that matches the sandy terrain of their habitat, while others have a dark fur color. Foxes, which prey on the rabbits, are better able to spot the darker rabbits against the sand. According to Darwin's theory of evolution by natural selection, which of the following statements is NOT true?
Individual dark rabbits will become lighter over time to become fitter.
Drag the scientist's name over to the the second column underneath the box with what they were known for. If you get it right, the box will be green.
Jean-Baptiste de Lamarck = He thought acquired skills/talents of animals could be passed on to their young (he erroneously though a giraffe who stretched his neck to get higher leaves could pass his stretched-out neck on to offspring) Georges Cuvier = He worked with fossils and noticed life forms were different the farther down in the rock he went Charles Darwin = the father of evolution Mootoo Kimura = Neutral Theory which minimized the importance of natural selection
In a savannah ecosystem, during particularly abundant rainfall years, certain trees produce a greater number of low-hanging fruits that only mammals with short snouts can access. If the savannah experiences heavy rainfall for many years, the idea of evolution by natural selection predicts that which of the following should result?
More mammals with long snouts should struggle to find food, leading to subsequent generations of mammals with a greater proportion of short snouts.
To recall the taxonomic hierarchy (kingdom, phylum, class, order, family, genus, species), this mnemonic corresponds to the first letter of each level: Kings play chess on fine girls' stomachs.
True
Which of the following is the second to lowest form of hierarchical classification in taxonomy?
Genus
Which type of selection favors a trait toward a single extreme phenotype? Ie- favors extremely hot temperatures, (an extreme away from the mid-range of average temperatures)? Graphically, this would look like a hill that slopes to the left or right of the mid point.
directional
Which type of selection favors a trait toward 2 extreme phenotypes, both in different directions away from the mid-range? Ie- favors anteaters with long and short noses, but no average noses (average noses would be the mid-range and the long and short noses are 2 extremes that point in different directions away from the mid-range). On a graph, the line would look like 2 hills at the left and right of a low point in the middle.
disruptive
Which type of selection favors a trait that's in a mid-range? ie- average-height people are favored more than tall or short people. So the mid-range is favored. Graphically, the line would like a hill with a peak at the mid-range.
stabilizing
In a population of sunflowers, researchers examined a gene associated with drought resistance, labeled dr-19. They gathered samples from various locations along a river, starting at its source where water availability is high. After analyzing the samples, they observed that, as the distance from the source increased and water availability decreased, the frequency of the dr-19 allele also increased. What kind of selection likely explains this pattern in the dr-19 allele?
directional
Select the best choice below that scientists think could be a cause for a mass extinction event in history
all of the above
Scientists think the CRETACEOUS extinction from 65 mya was caused by ...
either a or b could have been a cause
The Permian extinction...
all of the above
Which of the following is true about sexual recombination?
all of the above
What is an example of Lamarckism?
Matthew works out very hard in the gym and has huge muscles. Matthew will be able to pass his huge muscles on to this offspring through reproduction.
What does it mean to say that an individual organism is more fit than another? HInt- when we say "fit" it's always in the context of reproduction.
The organism produces more offspring that survive and reproduce (so it contributes more to the gene pool).
Sympatric speciation is more common in plants than animals. And polyploidy is a common cause of sympatric speciation in plants.
True
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