GM males would continue to compete with normal males for surviving females; each successful mating by a GM male would produce a new generation of GM males to continue the process, but all females of that generation would die before ever having a chance to bite a human or breed.
Effectively reducing the reproducing offspring of GM males compared to the unmodified males. The GM population would still die.
Software is simply a list of instructions. It is not a physical product. It should not therefore be patentable. Copyright protection is available to those who need it.
As being simply a list of instruction one could argue it's like a chemical molecul, a structure and therefore be patentable.
However, software is also a bunch of implemented ideas. Not solely one idea but thousands of ideas.
To protect your implementation of ideas there's copyright protection. It's not one idea that makes good software, however, lacking several ideas could be disastrous.
GM males would continue to compete with normal males for surviving females; each successful mating by a GM male would produce a new generation of GM males to continue the process, but all females of that generation would die before ever having a chance to bite a human or breed.
Effectively reducing the reproducing offspring of GM males compared to the unmodified males. The GM population would still die.