adjective
Definition: Relating to a type of gene that does not show its effect unless two copies are present, often overshadowed by a dominant gene.
Example: In genetics, a recessive trait will only appear if an individual inherits the same recessive allele from both parents.
noun
Definition: A type of gene or trait that does not show its effect unless two copies are present in an organism.
Example: The child inherited a recessive trait from both parents, resulting in blue eyes.