Foundations of Ecolegy and Evolution SPRING 2018-Form B on cooldla interested in

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Foundations of Ecolegy and Evolution SPRING 2018-Form B on cooldla interested in communication in house crickets (Acheta domestica). You notice that days the crickets seem to chirp less than on warm days, so you decide to test to see if ickets that are temperature affects chirping rate in crickets. In your experiment you have 50 cr kept at 24°C and find the om temp) and 50 crickets that are kept at 10°c. You measure the rate of chirping Temperature of Crickets Average Rate of 24°C I ooc Chirping 5 chirps/second 3 chirps/second To determine if there is a significant difference in rate of chirping between conduct the two groups you a t-test. You get a p-value of 0.003. Based on this information you can say: s a statistically significant different between the rate of chirping in crickets at 24C Although the average rate of chirping is higher in crickets at 24°C than at 10°C, the difference is not statistically significant and 100C. C) A cricket at 24°C will always chirp at a higher rate than a cricket at 10°c. )Cricket chirping rate is not affected by temperature. 27. In the experiment above which of the following is your dependent variable? A) temperature B) average rate of chirping C) the p-value D) sex of the cricket 28. When we compare levels of genetic variation between contemporary African populations to that of contemporary non-African populations, we find that there is more variation among the African population. One reason we see this pattern is that: A) non-African populations represent founder events B) non-African populations have high mutation rates C) non-African populations experience higher rates of natural selection than do African populations D) African populations experience higher rates of natural selection than do non-African populations E) gene flow occurred between Homo sapiens and other Homo species only outside of Africa. 29. How does ecological isolation prevent successful interspecies hybridization? A) attempted mating is unsuccessful B) hybrid zygotes fail to develop properly C) gametes fail to fuse following a successful mating attempt D) the parent species do not come into contact with one another

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Answer:

26) Based on this information, you can say:

27) In the experiment above, which of the following is your dependent variable?

28) One reason we see this pattern is that:

29) How does ecological isolation prevent successful interspecies hybridization?

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