Same Batch Different Fathers

[rvrrays]

It has been proven with nurse sharks.

To DW's point, there are good theories out there but, no real evidence.

Colin

 

[Mark Huveneers]

Actually ALL of them would be cross bred offspring... unless nuclear DNA testing was done to verify species.

You have a point, but there are some charcteristics that give me reason to believe this is not the case. For example: single spine row on the tail is dominant, the hybrids all have one row, the pure henlei has two. This should not be possible with F1. Only in the F2 it would they be able to get two rows of spines again.