Identify the phenotype for each number represented in the 3:1 ratio.

If a man with type O blood has a child with a woman who is heterozygous for type B blood, what are the possible blood types for this child?

For each of the following genotypes state whether you have a homozygous or heterozygous for each trait (you may need to use 2 terms for one genotype). AaGG Rrgg TTGg

A woman with type A blood marries a man with type O blood. They have six children, all of whom have type A blood. What are the probable genotypes of the parents? Could they ever have a child with type O blood?

A parent with Type A blood and a parent with Type O blood have a child. Which of the following is a possible genotype of their offspring?

Duchenne muscular dystrophy is an inheritable disorder that results in muscle weakness, leading to walking and breathing difficulties and heart disease. Which of the following is a valid conclusion about the Duchenne muscular dystrophy pedigree shown above? a. Without further evidence, the genotypes of individuals II-2 and III-2 cannot be determined. b. Only individuals I-1 and II-3 are confirmed carriers of the Duchenne muscular dystrophy allele.

A couple finds out that both the male and the female are heterozygotes (carriers) for Tay Sachs. Draw a punnet square for this couple. What is the likelihood that this couple will have an offspring with Tay Sachs?