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Warm-up Problem: Autosomal Recessive Steve and Linda have a history of cystic fibrosis (CF) in their families. Steve is a carrier of CF and Linda is heterozygous. They always wanted a family with three children (make the children any gender you wish). a. Complete a Pedigree showing these 5 people. b. Complete a Punnett square for Steve & Linda. c. What is the probability for having a healthy child? d. What is the probability that all three children will be healthy? Warm-up Problem: Autosomal Recessive Steve and Linda have a history of cystic fibrosis (CF) in their families. Steve is a carrier of CF and Linda is heterozygous. They always wanted a family with three children (make the children any gender you wish). ¾ Steve healthy Steve Linda Hh Hh ¾ Lind a healthy H h Hh H Steve HH Steve Hh Steve hh h Steve a. Complete a Pedigree showing these 5 people. ¾ Steve b. Complete a Punnett square for Steve & Linda. healthy c. What is the probability for having a healthy child? 3/4 d. What is the probability that all three children will be healthy? 27/64 Warm-up Problem: Autosomal Dominance Rodney recently tested negative for the FH gene even though his mother and father had FH. Francine recently survived a heart attack at 34 years of age. They have two children who were recently tested negative for the FH gene. a. Complete a Pedigree showing these 6 people. b. Complete a Punnett square for Rodney & Francine. c. What is the probability for having a healthy child? d. What were the odds of Rodney being born without the FH gene? Warm-up Problem: Autosomal Dominance Rodney recently tested negative for the FH gene even though his mother and father had FH. Francine recently survived a heart attack at 34 years of age. They have two children who were recently tested negative for the FH gene. a. Complete a Pedigree showing these 6 people. Hh ¾ hh b. Complete a Punnett square for Rodney & Francine. Hh Rodney Francine hh Hh healthy c. What is the probability for having a healthy child? hh d. What were the odds of Rodney being born without the FH gene?
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