Here's a breakdown:
* Dominant Allele: An allele that masks the expression of another allele (the recessive allele) when both are present.
* Recessive Allele: An allele that is only expressed when two copies of it are present in the genotype.
Example:
* Let's say the gene for eye color has two alleles: brown (B) and blue (b). Brown is dominant, and blue is recessive.
* If an individual has the genotype Bb, they will have brown eyes because the dominant B allele masks the expression of the recessive b allele.
* Only if an individual has the genotype bb will they have blue eyes.
Let me know if you have any other questions!
