Hybrids are often sterile because te set of chromosoms from one species cannot pair during meiosis with the set of chromosomes from the other species. ("Biology", Reece 7th edition)
The reason that many allopolyploid hybrids are sterile is that Many of these rapid changes may contribute to reproductive isolation and speciation
Animals which don't get pregnant, cause pregnancy or won't give birth. Usually hybrids are sterile.
All mammalian hybrids are sterile if male. The females can be subfertile.
Yes, but you usually have to breed them with convict cichlids, because they are hybrids and the males are often sterile.
a post-zygotic barrier
Donkeys? No. They are sterile Mules do not breed. They have 1 too many chromosomes wich makes them infertile.
No, they are big cats. Ligers are the result from man cross breeding a lion and a tiger, as with most hybrids they are sterile. If they were able to reproduce, they would have cubs.
All male mules, like other mammalian hybrids, are completely sterile. Female mules can be persuaded to ovulate and can be crossed with horses, donkeys or other equids.
we are all hybrids of aliens.
Hybrids Plus was created in 2006.
The answer depends on what hybrids you mean.
The population of Hybrids Plus is 20.