Exercise 3: What Is The Genotype Of The Mother?

Register to read the introduction… | F | What is the genotype of the father? | f | What are the possible phenotypes of the children? | Ff and ff | What is the probability of freckles in their children? | 50% | Freckles in humans are inherited by which pattern: dominant/recessive, incomplete dominance, or codominance? Why does the mother have freckles, even though she has a gene for no freckles? Why does the father have no freckles? | Freckles in humans are a dominant recessive pattern. A parent carrying even a single copy of the dominant allele F will have freckles, in this case it is mom. The dad who has homozygous recessive ff has no freckles. |

Exercise 3: Blood Type

A male has Type A blood, and a female has Type B blood. Could they have a child with Type O blood? Demonstrate how this is genetically possible by filling out the Punnett square. Choose the correct parental gametes from all of the potential blood type gametes below, and align these in the correct positions around the Punnett square. (Type in the correct gametes. The pink are female gametes, and the blue are male gametes.)
IA
IA
IB
IB
IA
IA
IB
IB
IB
IB
IA
IA i i i