Gays and biology: Who is right, PM or the MP?

Andy Ho
Sat, Oct 27, 2007
The Straits Times

Some time ago I got to know this journalist. He frequently writes on socio-political affairs for the Straits Times with attempts to get his readers to think deeper on the underlying truths on contemporary issues.

His latest article was written in view of the controversial statements of the biological nature of homosexuality used as the basis for human rights in reappealing against the 377A debate.

He is a fine example how a Christian, through his vocation in the marketplace, can serve God and people with relevance and effectiveness in the world.

IN THE parliamentary debate over the continued criminalisation of gay sodomy, MP Lim Biow Chuan (Marine Parade) disagreed with Prime Minister Lee Hsien Loong who said that growing scientific evidence shows homosexuality is substantially inborn.

What does the research say? To me, there are four big items that are not what they seem to be.

  • First, twins are not what they seem to be. Identical twins share the same genetic make-up while non-identical twins share only half of that, so if the former show a higher similarity in rates of gays, that would suggest a genetic component in homosexuality.
  • According to some doctors, previous studies of identical twins suggest that 30-60 per cent of the incidence of gayness can be attributed to genetics.

    Indeed, many such studies up to the early 1990s indeed suggested so. An Australian study published even in 2000 gave figures in the same ballpark.

    Hoewever, many twin studies are methodologically flawed. For one thing, a social phenomenon as complex as gay behaviour is usually reduced to a single item…….. (continued)

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