Here's a breakdown:
* Dominant allele: The allele that will be expressed (show its trait) even if only one copy is present in the individual. It's represented by a capital letter.
* Recessive allele: The allele that will only be expressed if two copies of the recessive allele are present (meaning no dominant allele is present). It's represented by a lowercase letter.
Example:
* Brown eyes (B) are dominant over blue eyes (b).
* A person with one B allele and one b allele (Bb) will have brown eyes because the dominant B allele masks the recessive b allele.
* A person with two b alleles (bb) will have blue eyes because the recessive b allele is expressed without a dominant B allele to mask it.
Let me know if you have any other questions!
