Surah Luqman Verse 34 – “only Allah Knows What’s Hidden In The Womb"
Since the sex of children is determined at the time of conception and ultrasound can not identify this till 11 weeks onward, the claim made in quran is still true. He the Almighty knows it before conception, He knows it at the very time the conception is taking place. Even if we have the technology that could see the conception being happening, there will always be a time where His knowledge will always be above our limited knowledge.