>>12564185The natural, old fashioned methods of reproduction are best; tinkering with genes as you proscribe at this point in history is like letting drunk toddlers perform exploratory surgery -- recursively synergistic functions, like the clever use of drum spin speeds to time access jobs in old mechanical data storage devices running software on ancient machines, lurk in the genetic code too sublime for any human alive today to fully grasp... the long term risks to our gene pool are simply too great to allow anyone mucking around with designer genes just yet.
Genetically modifying anything that's not an experimental subject which will never leave it's perfectly secure laboratory nor trouble any gene pool is just a bad idea for the time being.