Frank and Susan both have freckles but they're firstborn son Lawrence does not demonstrate the characteristics. What are the most likely genotype of Frank Susan and Lawrence?

I will be adding two questions here because I asked two of the same questions twice by accident earlier.  A man and a woman do not have hemophilioa, but the womans father did. (Hemophilia is X-linked recessive). a) What is the probability that they will have a child with hemophilia? b) Is it possible for any of their daughters to be affected? Explain. A cross between a horse homozygous for red hair and a horse homozygous for white hair results in offspring with the coat colour called roan. When you look at the fur of the roan offspring you see both red and white hairs. What type of inheritance best explains this?  a) blending inheritance b)codominance c)incomplete codominance d)multiple alleles

John and Sue are expecting a child, but are concerned about a rare autosomal recessive disease that is present in both of their families. In the pedigree, John is represented as individual III-11 and Sue is represented as individual III-12; both are unaffected. John's sister, III-10, and Sue's brother, III-13, both do not show evidence of the disease, but John's paternal grandmother and Sue's maternal grandfather both had the disease. Assign the appropriate symbol to each individual in the pedigree. I 3 4. Answer Bank II III 11 12 13 10 2.

Jan and Michael are both carriers for the cystic fibrosis allele. If Jan and Michael have five children, what the probability that three or more of the children will have the disease?