EEMB2_Final_Salmon

A less than one year b less than a decade c about 20

Info iconThis preview shows pages 2–4. Sign up to view the full content.

View Full Document Right Arrow Icon
person became infected, about how long would it take for disease symptoms to occur? A. Less than one year B. Less than a decade C. About 20 years D. About 30 years E. None of these answers is correct 5. If everyone in the world switched to a vegetarian diet for many years (leading to many associated changes in agriculture), then the the frequency of influenza pandemics would be: A. Increased B. Decreased C. Unchanged D. There is no relationship between world-wide diet and influenza E. Both answers C and D are correct EEMB2 Final Salmon Version: 0 Page: 2
Background image of page 2

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Use the following information for the next 5 questions (until you see a solid line): A bird species (the green-winged babbler) has two traits that you suspect may influence sexual selection: a black head plume (A long, soft feather) and green wings. Females’ body coloration is a cryptic brown and they do not have head plumes. Females have a vocalization they use to signal males that they are ready to mate with them. In controlled experiments, males with bigger head plumes received more mating vocalizations from females, and males with brighter green wing coloration received fewer female mating vocalizations but were better able to defend their mating territories from intruders. Males from all other species in the clade to which the green-winged babbler belongs have drab coloration like females, but experiments demonstrate that females from these other species (including those closer to the root compared to the green- winged babbler) all have a strong mating preference for green-winged males. 6. The trait(s) influencing intersexual sexual selection in the green-winged babbler is (are): A. black head plume B. green wing color C. cryptic brown body color D. Answers A and B are both correct E. None of these answers is correct 7. The trait(s) influencing intrasexual sexual selection is (are): A. black head plume B. green wing color C. cryptic brown body color D. Answers A and B are both correct E. None of these answers is correct 8. Suppose that an experiment (that kept juvenile rearing conditions constant) found that the slope of a plot of a sister’s lifetime survival vs. the size of her brother’s head plume was positive. This finding would indicate that the head plume most probably evolved due to: A. sensory exploitation model B. sexy sons model C. sexual conflict model D. material benefits model E. good genes model 9. Suppose that males brood their mate’s eggs and that this brooding behavior is energetically taxing on the males, causing males to sometimes abandon their clutch of eggs. On average, smaller males are more likely to abandon their clutch of eggs, and larger males are more likely to be successful in obtaining a mate. If you found that large males with average brightness of their green wings had mating success equal to that of small males with very bright wings, then which sexual selection model is most likely responsible for the evolution of the bright green wings?
Background image of page 3
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page2 / 15

A Less than one year B Less than a decade C About 20 years...

This preview shows document pages 2 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online