(Solved): Need Question 24. including a), b), c), d) and Question 25. including a) and b) Pedigree analysis is ...

Pedigree analysis is often used to determine mode of inheritance (dominant or recessive, for example). Be sure to read the "Tips for Pedigree Analysis" in Figure 14.15 in your text. Consider the following pedigree for the trait albinism (lack of skin pigmentation) in three generations of a family. (Solid symbols represent individuals with albinism.) Complete the unlabeled pedigree by indieating the genotypes for all involved. From your knowledge of Mendelian inheritance, answer the questions that follow: a. Is this trait caused by a dominant or recessive allele? What is the evidence for your response? b. Determine the genotypes of the parents in the first generation. (Let $A$ and $a$ represent the alleles.) Genotype of father . genotype of mother What is the evidence for your response? c. Determine the probable genotypes of the mates of the offspring with albinism in the secohd generation and grandson $?=4$ in the third generation. Genotypes: mate $\#1$ ; grandson \#4 d. Can you determine the genotype of son $\#3$ in the second generation? Why or why not? 5. There are tests to identify carriers that allow couples with a family history of a disorder to make informed decisions about having children. Genetic counseling for these families is based on Mendelian genetics and probability rules. Work through the example of hypothetical couple Tyler and Lily on p. 288 of your text to understand the mathematics involved. Then, solve the following problems. Lucia and Jared each have a sibling with cystic fibrosis; neither Lucia or Jared nor any of their parents have the disease. a. Calculate the probability that a child born to this couple will have cystic fibrosis. Show your work and explain your answer. b. What would be the probability if a test revealed that Jared is a carrier, but Lucia is not? Show your work and explain your answer.