Define codominant and give me an example

Co-dominant occurs when two versions or "alleles," of the same gene are present in a living thing, and both are expressed.

Explanation:

Example is the human ABO blood system; person with type AB blood have one allele for A and one for B.(Person with neither are type O.)

hi~~

i would say that hybridization occurs frequently in nature, because there are many types of hybrids that have occurred naturally, such as the mule (male donkey + female horse)