define mass selection and pure-line selection with examples for each.

DEFINITION OF PURE LINE SELECTION : A UNIFORM STRAIN OF ORGANISMS THAT ARE CONSIDERED PURE GENETICALLY AND ARISE OUT OF CONTINUOUS INBREEDING AND ARTIFICIAL SELECTION.

DEFINITION OF MAS SELECTION : IT IS A MIXED STRAIN OF ORGANISMS THAT ARENT PURE AND ARE A MIXTURE DEVELOPED FROM MORE THAN ONE PURELINE.

1.The varieties arent mixtures and are developed as pure lines in pure line selection. The variety is a mixture of pure lines in mass selection.

2.pure line selection involves scietific procedures and is not practised by farmers. Mass selection is practised by farmers unknowingly.

3.Pure line selection is practised only in self pollinated crops but mass selection is practised in self as well as cross pollinated crops.

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