When a trait is always expressed, it is considered to be a trait.
O Recessive
O Codominant
O Dominant
O Incomplete

O Dominant

Explanation:

An allele that is always expressed whenever it is present is called dominant. Mendel's law of segregation states that  the two alleles for a trait segregate independently when gametes are formed.

Hope this helped

A dominant trait is a form of trait which is ALWAYS expressed.

it takes hundreds of years to become stable.

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