Morphological and physiological traits by which the sexes differ; divided into primary characters, the gonads themselves, and secondary characters, comprising all other differences.
All traits except the gonads by which males and females differ externally and in...
The choice of individuals within a population to achieve a defined breeding obje...
The base population within which selection is carried out.
A measured trait or condition used as the basis for selection.
The difference between the mean of a selected group and the mean of the original...
The improvement achieved per unit of time as a result of purposeful selection (g...