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Problem 1.2 In humans, the presence of freckles is a dominant trait, and their absence is a reces- sive trait. The eyebrow shape is also

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Problem 1.2 In humans, the presence of freckles is a dominant trait, and their absence is a reces- sive trait. The eyebrow shape is also a genetically inherited trait, with separated eyebrows being dominant and joined eyebrows being recessive. In a couple, the woman has freckles and separated eyebrows, and she is heterozygous for both traits. The man does not have freckles but he has joined eyebrows. What is the probability that their o'spring has freckles and separated eyebrows? Draw the tree diagram or Punnett square to justify your answer. Problem 2.8 Consider 1150 students that were enrolled in both Biology and Chemistry. Among these students only 50 got an A+ in Chemistry. However, 375 students got an A+ in Biology. There were 45 students that got an A+ in both Biology and Chemistry. We select a. student at random from these 115'!)I students. (a) What is the probability that the selected student got an A+ in Biology but not in Chem- istry? (b} What is the probability that. the selected student got an A+ in Chemistry but not in Biology? (c) What is the probability that the student did not get an A+ in Biology or did not get an A+ in Chemistry? {d} What is the probability that the student got an A+ in at least one of these two oourses'? {e} What is the probability that the student did not get an A+ in Biology and did not get an A+ in Chemistry

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