Provide a possible explanation for why hybrids are rare and not as fit as either parent species.

Hybrids can have less fitness, more fitness, or about the same fitness level as the purebred parents. Usually, hybrids tend to be less fit; therefore, reproduction to produce hybrids will diminish over time, which nudges the two species to diverge further in a process called reinforcement.

Explanation:

ㄒɦĄŊĸ ĦØPĒ ĮŤ ɧėŁP ♡

the hybrids species are considered rare because of the lack of interrest of diferente species to interect sexually , they are not fit because of the genetic modifications that cannot agrre with the environmet provided

Explanation:

answer; polycythemia is the correct answer;