The Fisher Family

There are six people in the Fisher family. Olivia and Marcus are the parents. They have four children, Violet, Nathan, Jonas, and Claudia.

Neither Olivia nor Marcus have freckles.
What is Olivia's genotype?
What is Marcus' genotype?
How many children have freckles?
Both Marcus and Olivia are heterozygous for the hairline trait.
How many of their children have a Widow's peak?
How many have a straight hairline?
How many children are homozygous dominant for the trait?
Neither Marcus nor Olivia can roll their tongues.
How many of their children can roll their tongues?
How many cannot?
What is Violet's genotype?
All four children have dimples.
If Marcus is a hybrid, what is Olivia's genotype?
Does she have dimples?
Both Olivia and Marcus are EE for the earlobe trait.
What is the ratio of free earlobes to attached earlobes?
What percentage of the children are homozygous?
Marcus's genotype for eye color is bb. Olivia has brown eyes, but she is heterozygous for the trait.
What percentage of the children have blue eyes?
If Violet has green eyes and Jonas has brown eyes, what is Claudia's genotype?
How many people in the family have blue eyes?