6.10 Dominant alleles can mask recessive alleles
In contrast to recessively inherited traits, some alleles are dominant. With a dominant trait, an individual will express the associated phenotype even with just one copy of the allele for the trait.
![](https://open.lib.umn.edu/app/uploads/sites/206/2019/05/Dominant-Mutation-04-1-1024x555.png)
![](https://open.lib.umn.edu/app/uploads/sites/206/2017/08/Check-Yourself-Icon-01-186x300.png)
Check Yourself