dominant - one allele id dominant over another. If there are two alleles and one of them are dominant, then it is most likely that that feature would be the dominant feature. Eg. A- brown eyes, a- blue eyes= Aa (brown eyes)

Recessive - A recessive gene is a gene that can be masked by a dominant gene. In order to have a trait that is expressed by a recessive gene, such as blue eyes, you must get the gene for blue eyes from both of your parents. You might remember the word recessive from biology, where it most often appears.

codominance-

Genotype- percentage/ chance of getting the specific gene trait