but an individual animal not belonging to a social community, if rendered slightly sterile when crossed with some other variety, would not thus itself gain any advantage or indirectly give any advantage to the other individuals of the same variety, thus leading to their preservation.
baina talde sozial bateko ez den animali banakoak, beste aldaki batekin gurutzatzean antzu bihurtzen bada, ez berak aterako luke abantailarik, ezta aldaki bereko banakoei biziraupena ekarriko liekeen abantailarik zeharka emanen ere. Baina ez dago arazo hau hemen xehetasunez eztabaidatu beharrik;