Howey, you and your associates don't really believe that there's ever going to be a scientific confirmation of a genetic link to abortion in the womb, now do you?
In fact, you really don't want that to ever happen, you don't want any other information that might upset the apple cart over this entire agenda. The ;last thing you and your associates want is a discovery that all of you are confident will never occur because if it did surface, it would eliminate an important value in your PC value system by forcing you and them to alter one part of your agenda .. abortion on demand .. to favor another part of it and that's a situation you will all avoid at any cost.
Homosexuality at birth is an important part of homosexual politics just like racial politics is to progressives and science in this case is eliminated and excused by your inner beliefs that the situation will never come about when that choice will have to be made.
Like everything else that you believe, it is based on political correctness and you want it to remain that way without any scientific interference which you are confident wont ever discover something that will upset and disfigure your overall goals.
Science will one day discover that life begins at conception which is another future possibility you'll bury under a mound of political correctness for expediency.
It's PC law that leftists like you cling to, not actual scientific evidence and this thread is evidence to it.