(evolutionary theory) Intervention by humans in the breeding of plants or animals in order to preserve selected genetic traits.

The practice of breeding the best specimens of a given organism to encourage certain features.

plural of selection rule

A standardized colour for automotive lamps, intended to improve vision by removing blue wavelengths from the projected light.

(education) A school that admits students on the basis of their academic achievements.

(firearms) The ability to choose whether a weapon fires automatically or semi-automatically.

(US, basketball) The Sunday in March on which the teams that participate in the NCAA Division I men's basketball tournament are selected.

plural of selective school

(biology, evolution) A form of natural selection whereby traits that may be disadvantageous to the individual can be propagated when they are advantageous to the survival of a group as a whole.

(US, basketball) The Monday in March on which the teams that participate in the NCAA Division I women's basketball tournament are selected.