Basic Terms of Probability Page 1 of 2 Basic Terms of Probability Objectives: • Determine the probability of a given event. • Determine the odds of a given event. • Use a Punnet square to determine probability Vocabulary: • experiment • sample space • event • probability • odds • dominant • recessive • Punnett square • codominant =)(Ep :)(=Eo Possible Classroom Examples: A jar on your desk contains twelve black, eight red, ten yellow, and five green jellybeans. You pick a jellybean without looking. • What is the probability that the jellybean is green? • What is the probability that the jellybean is not yellow? • What are the odds in favor of picking a black jellybean?Basic Terms of Probability Page 2 of 2 A family has three children. Using b to stand for boy and g to stand for girl, and using ordered triples such as (b, b, g) give: a. the sample space b. the event E that the family has exactly two daughters c. the event F that the family has at least two daughters d.. the event G that the family has three daughters Mendel found that snapdragons have no color dominance; a snapdragon with one red gene and one white gene will have pink flowers. If a pure-red snapdragon is crossed with a pure-white snapdragon, find the probability of the following. a. a red offspring b. a white offspring c. a pink offspring If carrier-detection tests show that two prospective parents have sickle cell train (and are therefore carriers), find the probability of each of the following a. Their child would have sickle cell anemia. b. Their child would have sickle cell trait. c. Their child would be healthy (i.e., free of symptoms). Tay-Sachs disease is a recessive disease. If carrier-detection tests show that one prospective parent is a carrier of Tay-Sachs and the other has no Tay-Sachs gene, find the probability of each of the following. a. The child would have the disease. b. The child would be a carrier. c. The child would be healthy (i.e., free of
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