The phrase "hybrid offspring" refers to the children or offspring that are produced when individuals from different species or varieties reproduce with each other. Full definition
These monkeys have successfully been producing hybrid offspring for hundreds maybe even thousands of years. (newswise.com)
Another factor shown to be determining the number of hybrids is that hybrid offspring do not survive to adulthood as well as do the other two species. (sciencedaily.com)
Specifically, they knew two closely related wasp species, Nasonia giraulti and Nasonia longicornis, could produce healthy hybrid offspring and that the two had a similar array of gut bacteria. (discovermagazine.com)