PLS THIS TEST IS DUE TODAY AND I WILL GIVE U BRAIN LIS Constructed Response Items: Many scientists have studied the body characteristics or traits of fruit flies to learn more about genetics. In
one experiment, a female fly with white eyes was mated with a male fly with red eyes. The scientists
recorded the eye color of all the offspring in the table below.
Results of Fruit Fly Experiment
Red Eyes
O flies
Male Offspring
Female Offspring
White Eyes
120 flies
O flies
180 flies
11. Part (A) Calculate the ratio of male to female fruit flies. Calculate the total number of flies in the
experiment. Calculate the percent of fruit flies with red eyes. (S7L3b) 4 pts.
11. Part (B) What conclusion can you make about the sex of fruit flies and eye color in this experiment?
(S7L3b) 4 pts.
12. Part (A) Identify the individual unit that determines traits, such as eye color. On what structures are
these unit located? (S7L3a) 4 pts.
12. Part (B) Explain how the fruit fly offspring received their traits from their parents. Be sure to complete
ALL parts of the task. Answer with complete sentences, and use correct punctuation and grammar.
(57L3a) 4 pts.