After you are finished with this question, you must show the…

After you are finished with this question, you must show the front and back of your scrap paper to the webcam.  This question has two parts:  Part 1: Two carriers of cystic fibrosis have child.   What are their genotypes?  What is the genotype and phenotype ratio of the offspring?  Part 2: Suppose their first child does not have cystic fibrosis, what is the chance their second child will?   

You are permitted to use one sheet of scrap paper. The paper…

You are permitted to use one sheet of scrap paper. The paper must be blank at the beginning of the test. Before beginning this question, you must show the front and back of your scrap paper to the webcam.  Remember, this part of the test is timed to allow 5 minutes per question.  Pace yourself   A woman has blood type  B. Her child also has blood type B. Tom has blood type A.  Can Tom be the father of the child? Explain why or why not. Your answer must be supported with data (you do not necessarily need to show an entire Punnett square) and your answer must be a complete explanation of why or why not. Do not just answer with  yes or no