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Adult feet and baby feet are next to each other. They are positioned as if the adult is sitting down and the baby is between their legs. They both wear bright blue clothing.

Blood is thicker than water, or so the saying goes, reflecting the value we put on biological relationships. But is it something the law should recognise?

Singapore’s Supreme Court recently ruled on a case that asks this very question, and it gave a fascinating answer: parents have a strong interest in “genetic affinity” with their children, one that can merit compensation if subverted.

Genetic affinity is an entirely new legal standard. It has no clear precedent in any jurisdiction. But the court made a compelling argument that it has a sound basis in the way we value family and heredity.

Recognising that value will be particularly important as we advance into the genomic era, which will increase our ability to not only analyse but also alter our fundamental biological code.

ACB v Thomson Medical

The case in question involves an unfortunate mix-up. A couple underwent in-vitro fertilisation (IVF) at Thomson Medical Centre in Singapore. The process was successful, and the mother gave birth to a healthy baby girl (her second child via IVF) in 2010.

But the happy parents soon...