George and Arlene are married and have 4 children (Tom,Sam, Wilma,Ann). Tom is married to Sandra and have two children (Daniel and Alan). Alan is married to Tina and have a son Christopher. Ann is married to Michael and have a daughter Carla. **Affected people with alkaptonuria are: Arlene, Tom, Wilma, and Carla** My questions are: Does alkaptonuria appear to be caused by a dominant or recessive allele? What is George's phenotype? Is is possible for Daniel to have a child with alkaptonuria? Explain. How would knowing the pattern of inheritance influence the treatment plan for this disease?

Question

George and Arlene are married and have 4 children (Tom,Sam, Wilma,Ann). Tom is married to Sandra and have two children (Daniel and Alan). Alan is married to Tina and have a son Christopher. Ann is married to Michael and have a daughter Carla. **Affected people with alkaptonuria are: Arlene, Tom, Wilma, and Carla** My questions are: Does alkaptonuria appear to be caused by a dominant or recessive allele? What is George's phenotype? Is is possible for Daniel to have a child with alkaptonuria? Explain.  How would knowing the pattern of inheritance influence the treatment plan for this disease?

anonymous · Answer

To answer this question, we would first have to draw the entire pedigree chart, for this family. 

|dw:1374889094215:dw|

There's the entire chart. 
I can work with you through this problem. 

First, do you understand how to read that whole pedigree chart? 
Do you know what all the shapes and line connections mean?