See #530-531 for my general response on this topic. But you raise another important technical point which is actually very interesting to me (and is something St. Thomas Aquinas pondered using different language). If God did *not* take an ovum from Mary, what sense does it make to call Jesus a descendant of David, the Son of David (per Matthew 1, Luke 3, Romans 1:3, etc.)? He didn't get his DNA from Joseph--no sperm was used--God doesn't need any to create life, as we saw in Genesis 2. So no adultery was involved. Mary gave consent to a spiritual espousal, not a carnal one.
So, we see you are not only wrong but proudly wrong and closed to seeing Truth when offered to you. Your work here is supporting ‘the spirit of anti-Christ by directly impugning GOD’s character. You, as a blind Catholic are unable to see the defrauding your master has inveigle into your religion’s dogma, but a born from above Christian sees it quickly and discerns your spirit.