DNA Day experts answer your questions about about genetics and gender/sexual orientation

Above: Image © beemore, iStockphoto.com

Is there any important evidence suggesting that sexual orientation may be linked to genetics?

Behavioural traits are very complex and involve a number of genes. The environment also plays a significant factor in how these traits are manifested. So I definitely think there is a genetic component (because it runs in families) but there is definitely societal pressure (environmental factor) on how this will be manifested. Will this ever be one gene? I highly doubt it.

- Answer provided by Dr. Dennis McCormac

When a fetus is inside the mother's womb, Which gene determine the gender?

It is the X and Y chromosomes that determine gender. If the child is XX it is female, and XY is male.

- Answer provided by Dr. Monique Haakensen


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