8:15hsccsd.instructure.comCT CumQUTLStarted: Apr 20 at 8:09pmQuiz InstructionsQuestion 51 ptsWhat type of selection is this?Beak Size →# Birds in PopulationStabilizing SelectionDisruptive SelectionDirectional Selection◄ PreviousBeak Size→Quiz saved at 8:14pmNext▸Submit Quiz←→>+37←

Disruptive selection is a type of natural selection that simultaneously favors individuals at both…

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Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter45: Population And Community Ecology

Section: Chapter Questions

Problem 16RQ: Primates are examples of: density-dependent species density-independent species r-selected species...

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Similar questions

Primates are examples of: density-dependent species density-independent species r-selected species K-selected species
A forest fire is an example of regulation. density-dependent density-independent r-selected K-selected
The sacrifice of the life of an individual so that the genes of relatives may be passed on is called ____ ___________ . operant learning kin selection kinesis imprinting
Which of the following statements does not support the conclusion that giraffes are k-selected species? Giraffes are approximately 6' tall and weigh 150 Ibs at birth Wild giraffes begin mating at 6-7 years of age Newborn giraffes are capable of coordinated walking within an hour of birth, and running within 24 hours of birth Giraffes rarely give birth to twins.
For centuries, animal breeders have used artificial selection to increase the speed of racehorses. The results of such efforts are illustrated in a graph that identifies how quickly winning horses ran the 1-mile track at the Kentucky Derby, a famous race held annually at Churchill Downs, Kentucky. (The time it takes a horse to run a track of fixed length is inversely proportional to the horses speed.) Based on the data in the graph, has artificial selection increased the speed of horses consistently between 1900 and 2000? Do you think that artificial selection can increase the speed of racehorses in the future?
The MN blood group is of interest to population geneticists because (a) people with genotype MN cannot receive blood transfusions from either MM or NN people (b) the MM, MN, and NN genotype frequencies can be observed directly and compared with calculated expected frequencies (c) the M allele is dominant to the N allele (d) people with the MN genotype exhibit frequency-dependent selection (e) people with the MN genotype exhibit heterozygote advantage
Describe a situation in which a population would undergo the bottleneck effect and explain what impact that would have on the population’s gene pool.
Discuss Concepts Many city-dwellers have noted that the density of cockroaches in apartment kitchens appears to vary with the habits of the occupants: people who wrap food carefully and clean their kitchen frequently tend to have fewer arthropod roommates than those who leave food on kitchen counters and clean less often. Interpret these observations from the viewpoint of a population ecologist.
Measuring Genetic Diversity in Human Populations How would a drastic reduction in a populations size affect that populations gene pool?
As shown in Figure 23.25, there is considerable variation in the facial features of humans. Explain this fact in terms of the concept of the gene pool. Figure 23.25 Humans show a great deal of variation in their outward appearance. (Top: Rodriguez/ Fancy/Jupiterimages; Bottom left: Owen Franken/Corbis; Bottom right: Christopher Briscoe/Photo Researchers, Inc)
INTERPRET DATA Compare the two graphs in Figure 1-17. What information does the second graph illustrate? What possible explanation can you give for the differences shown in the two graphs? (a) Number of chimpanzees who successfully employed specific method of tool use. (b) Number of chimpanzees who successfully employed learned method of tool use two months later. Figure 1-17 An experiment testing learning in chimpanzee populations In the photo, wild chimpanzees are shown observing a member of their group using a tool.
Figure 1.15 Example of error bars in a graph. This graph was adapted from the peacock butterfly research described in Section 1.5. The researchers recorded the number of times each butterfly flicked its wings in response to an attack by a bird. The squares represent average frequency of wing flicking for each sample set of butterflies. The error bars that extend above and below the dots indicate the range of valuesthe sampling error. Figure It Out: What was the fastest rate at which a butterfly with no spots or sound flicked its wings?

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