# Monohybrid Cross Bell Ringer

```John and his wife Sarah have just found out they
are going to have a baby. They are trying to find
out the probability that their child will have blue
eyes. John has blue eyes, but Sarah has brown
eyes. Sarah’s mom has blue eyes and her dad has
brown eyes. Create a punnett square based on the
information above and explain the odds that John
and Sarah will have a blue-eyed child.
John and his wife Sarah have just found out they
are going to have a baby. They are trying to find
out the probability that their child will have blue
eyes. John has blue eyes, but Sarah has brown
eyes. Sarah’s mom has blue eyes and her dad has
brown eyes. Create a punnett square based on the
information above and explain the odds that John
and Sarah will have a blue-eyed child.
John’s Phenotype: ___________________
John’s Phenotype: ____________________
John’s Genotype: ____________________
John’s Genotype: ____________________
Sarah’s Phenotype: ___________________
Sarah’s Phenotype: ___________________
Sarah’s Genotype: ___________________
Sarah’s Genotype: ____________________
In humans blood type is determined by the A, B,
and O alleles. The A and B alleles are co-dominant
to each other and dominant over the O allele. An
individual with the AO genotype and an individual
with the BO genotype can produce offspring with
which of the following phenotypes?
In humans blood type is determined by the A, B,
and O alleles. The A and B alleles are co-dominant
to each other and dominant over the O allele. An
individual with the AO genotype and an individual
with the BO genotype can produce offspring with
which of the following phenotypes?
A. O only
A. O only
B. A or B only
B. A or B only
C. A, B, or O only
C. A, B, or O only
D. A, B, AB, or O
D. A, B, AB, or O
```