The exaggerated plumage and colors of male birds is thought to result from to different theories:...
The exaggerated plumage and colors of male birds is thought to result from to different theories: runaway selection and the handicap principal. Using an example, explain the difference between these two theories.
Homework Answers
runaway selection is also called as fisherian runaway. is an explanation first proposed by english statistician Ronald Aylmer Fisher in 1930s. it says that the female's choice cause deleterious characteristic development in males and change in male characteristics doesn't equal to higher quality.
handicap hypothesis proposed by Amotz Zahavi in 1975. according to him, the females only assess those traits that are honest indicators of male fitness and are costly to produce and maintain.
a common example for both of them is peacocks tail feathers. the peacock tail in flight, the classic example of an ornament assumed to be a fisherian runaway. and is an handicapped signal of male quality too.
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The exaggerated plumage and colors of male birds is thought to
result from to different theories:...
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Consider the following data, which result from two independent
samples:
• GroupA:1,4,7 • GroupB:5,2,8
We are interested in examining the difference in sums between
the two groups (A minus B) by using a permutation test. The
permutation distribution (for the 20 different possible
permutations) is shown below (note that it only contains odd
values).
a) (3 points) What is the observed value of the test
statistic?
b) (2 points) What is the p-value for a one-sided greater
alternative?
c) (2...
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that's all the professor give 3. In pigs, black hair (B) is dominant to red hair...
that's all the professor give
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Question 6:
What percentage error would result from miscounting
the bars by one?
EXPERIMENT 10 THIN FILM INTERFERENCE Light from a monochromatic source is shined downward on two glass plates that are separated at one end by a hair. Light that is reflected from the top and bottom surfaces of the wedge-shaped thin film of air undergoes interference, and a series of dark and light lines are seen. By counting the number of dark or light lines over a known...
Exercise: Terms of Sexual Selection Instruction: Connect each term against its appropriate description through a line to match. Drag a line from each term on the left side to the corresponding description on the right side. Alternative mating strategies Selection that acts directly on a locus. Direct benefit A difference in the ability of an organism to perceive different stimuli (e.g., low vs high frequency sounds). Direct selection The gonads and closely associated structures that distinguish males and females. Fisher's...
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Consider the following data, which result from two independent
samples:
• GroupA:1,4,7 • GroupB:5,2,8
We are interested in examining the difference in sums between
the two groups (A minus B) by using a permutation test. The
permutation distribution (for the 20 different possible
permutations) is shown below (note that it only contains odd
values).
a) (3 points) What is the observed value of the test
statistic?
b) (2 points) What is the p-value for a one-sided greater
alternative?
c) (2...
40. Under the reciprocal demand theory what types of countries gain more from trade? 41. 42 Most of what we can graph in this class are static examples. But there are also dynamic gains from trade. What might two of those be as it pertains to specialization. 43. 45. When costs are increasing, with trade and specialization how is the end production result different from the constant cost case as far as its predictions. 46 47. What is the difference...
that's all the professor give
3. In pigs, black hair (B) is dominant to red hair (b). Erect ears (E) are dominant to drooping ears (e). What are the expected proportions of the different phenotypes resulting from a mating between two pigs heterozygous for both traits? SHOW A PUNNETT SQUARE 4. There are 2 colors in color squash, white & yellow. White (W) is dominant over yellow (w). What are the expected genotype and phenotype frequencies for each of the...
Question 6:
What percentage error would result from miscounting
the bars by one?
EXPERIMENT 10 THIN FILM INTERFERENCE Light from a monochromatic source is shined downward on two glass plates that are separated at one end by a hair. Light that is reflected from the top and bottom surfaces of the wedge-shaped thin film of air undergoes interference, and a series of dark and light lines are seen. By counting the number of dark or light lines over a known...
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