Definition

A situation where an individual with two different alleles for a trait shows a stronger or more advantageous characteristic than individuals with two identical alleles.

Example

In some plants, overdominance can lead to greater resistance to diseases compared to those with homozygous traits.

Conversation

Have you ever heard of the term overdominance?

Yeah, I think it's when a heterozygote has a more favorable trait.

Exactly! It's interesting how it can lead to better adaptations.

For sure, nature has some fascinating ways of enhancing diversity.

Synonyms & Antonyms

Root Explanation

Overdominance → It is formed from "over-" (meaning excessively or beyond) and "dominance" (from Latin "dominantia", meaning to rule or control). The word refers to a state of excessive control or influence over something.

Memory Tip

Think of having control that goes 'beyond' ('over-') what is normal or necessary — that's what overdominance means.

Visually Confused Words