Why does crosses of Dexters horses produce two Dexter horses for every Kerry horse?

The crossbreeding of Dexter horses with Kerry horses typically results in a genetic ratio where two Dexter horses are produced for every Kerry horse due to the differences in their genetic makeups and the dominance of certain traits. Dexters, being a smaller breed, often have dominant traits that overshadow the characteristics of the Kerry breed when mixed. This dominance leads to a higher probability of offspring resembling the Dexter breed. Consequently, the resulting offspring tend to be predominantly Dexter, reflecting the genetic influence of the parent breeds.