Biology for IGCSE & O level - Inheritance (Section 7 - No. 3)
If a woman has a dominant trait and her partner does not, what can be said about the phenotype of the children?
All children will have the trait.
None of the children will have the trait.
Some children will have the trait.
The number of children with the trait is unpredictable.
Explicación
It depends on the woman's genotype. If she's heterozygous, there's a chance some children won't have the trait.