A chimera is essentially a single organism that's made up of cells from two or more "individuals"—that is, it contains two sets of DNA, with the code to make two separate organisms. One way that chimeras can happen naturally in humans is that a fetus can absorb its twin.

I stumbled across a 2015 case where a child's DNA turned to be his uncles and not his father. But what was more shocking was that the father didn't have a brother.

What science learned from this changed our entire perspective. The father was a chimera who absorbed his fraternal twin, who also happened to be a male. Inside, the father’s sperm was 90% himself and 10% his twin brother.

His son only inherited the absorbed brother’s sperm, though. From this, a man who was never born managed to have a child of his own.

From an Islamic perspective, I'd like to inquire who can we consider the father to be?

Link: https://time.com/4091210/chimera-twins/

P.S I understand that such genetic details might not have been available 1400+ years ago. But do the ulema of today have any ijtehad on such matters from Hadiths?

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