english: So, a gene that makes an animal altruistically sacrifice itself to help the survival and future reproduction of its siblings or cousins, can become more widespread than one that is solely concerned with self-preservation.
non_english: Dakle, gen koji podstiče neku životinju da se žrtvuje kako bi pomogla preživljavanje i buduće razmnožavanje svoje braće, sestara ili rođaka, može postati rasprostranjenija nego životinje koje su usmerene na samo-preživljavanje.