On the view here given of the important part which selection by man has played, it becomes at once obvious, how it is that our domestic races show adaptation in their structure or in their habits to man's wants or fancies.
Gizakiak eginiko hautespenak izan duen garrantzi handiari buruz hemen azaldurikoaren arabera, begi-bistako gertatzen da berehala gure etxe-arrazek beren egituran eta ohituretan gizakumearen premia edo apetetara moldaera handiagoa zergatik erakusten duten.