The hierarchy is not arranged from least noble to most noble, but instead is a hierarchy of prepotency.

The chromosomes transmit the physical bases of heredity from one generation to the next, and the heritages from the two parents are equal except in cases of prepotency.

In artificial conditions, this in-breeding often results in the development of what is called prepotency.

I attach considerable importance to the phenomena of prepotency in view of the contrast which is presented between plants and animals in the relation of their species to physical barriers.

Another case showing the strong prepotency of the Manx cat.