9. Fruit flies. Offspring of certain fruit flies may have
Chapter 26, Problem 9(choose chapter or problem)
9. Fruit flies. Offspring of certain fruit flies may have yellowor ebony bodies and normal wings or short wings.Genetic theory predicts that these traits will appear in theratio 9:3:3:1 (9 yellow, normal: 3 yellow, short: 3 ebony,normal: 1 ebony, short). A researcher checks 100 such fliesand finds the distribution of the traits to be 59, 20, 11, and10, respectively.a) Are the results this researcher observed consistentwith the theoretical distribution predicted by the geneticmodel?b) If the researcher had examined 200 flies and countedexactly twice as many in each category118, 40, 22,20what conclusion would he have reached?c) Why is there a discrepancy between the twoconclusions?
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