Final answer:
The phenotypes of the offspring from a daughter (Ee) and a man (ee) could either express the dominant trait if the genotype is Ee, or the recessive trait if the genotype is ee. The correct phenotype answers are 2) Ee or 3) ee. The EE genotype is impossible in this cross.
Step-by-step explanation:
When considering the phenotypes of offspring from a daughter of the first couple (an EE man and an ee woman) who has children with an ee man, we must first establish the genotype of the daughter. Since her father is EE and her mother is ee, the daughter's genotype will be Ee, indicating that she is heterozygous. When she has children with an ee man, each child has a 50% chance to inherit either the E or e allele from her, and a 100% chance to inherit an e from the father.
To visualize the genetic outcomes, we construct a Punnett square combining the Ee genotype of the mother with the ee genotype of the father:
Mother (Ee):
E e
Father (ee):
e Ee ee
e Ee ee
Thus, there are two possible genotypes for their children, Ee and ee. The phenotypic outcome of the dominant 'E' allele is that it will mask the expression of the recessive 'e' allele. Therefore, this cross will result in children who can have either a dominant phenotype (if they inherit the 'E' allele) or a recessive phenotype (if they inherit two 'e' alleles).
So the phenotypes of their offspring would be:
- Ee - Dominant phenotype, potentially express the dominant trait.
- ee - Recessive phenotype, will express the recessive trait.
The correct option answer in the final answer for the phenotypes of their offspring can be either 2) Ee or 3) ee, but not 1) EE since the mother has only one dominant allele to give, and each child will certainly receive a recessive allele from the father.