Which letters are used for dominated and recessive characteristics?

In genetics, we use letters to represent different versions of a gene (alleles). Here's how we typically represent dominant and recessive characteristics:

* Dominant characteristics are represented by uppercase letters. For example:

* "B" might represent the dominant allele for brown eyes.

* Recessive characteristics are represented by lowercase letters. For example:

* "b" might represent the recessive allele for blue eyes.

Important Note: It's crucial to remember that the choice of letter is arbitrary and depends on the specific trait being studied. There's no set rule for which letter corresponds to which characteristic.