A shirt with a button-down collar
Of a collar, able to be buttoned down to the shirt, as over a necktie.
Serious; staid; businesslike.
Conservative; conventional; unimaginative.
To create a clone of.
A group of identical cells derived from a single cell.
A person who is exactly like another person, in terms of looks or behavior.
A copy or imitation of something already existing, especially when designed to simulate it.
A living organism (originally a plant) produced asexually from a single ancestor, to which it is genetically identical.