What is the 'Good Genes Hypothesis' and is it true?

The famous philanthropist Oprah has advised thousands of women across the globe on how to find 'the one'. But Oprah never mentioned the good genes hypothesis.

The good genes hypothesis was originally proposed in the 1980s and propagates the idea that observed mates are selected by their ability to pass on genes that increase reproductive success.

How might it work?

An organisms phenotype is determined by its genotype.

Meaning your body observable properties (organs, tissues and cells) are determined by their genes. Therefore if your face is asymmetrical then more mutations have arisen, making you a sub-optional candidate compared to a more symmetrical competitor, who is less prone to mutations.

Many psychology studies have shown that greater symmetry has a relationship with attractiveness.

Is the good genes theory well supported or true?

Whilst it is an appealing hypothesis, a recent study with almost 5000 participants with varying degrees of facial symmetry found no association between asymmetry and poor health. This evidently undermines the hypothesis. The good genes theory likely to be false. 

Maybe Oprah knows something we don't. 

Reference:
https://royalsocietypublishing.org/doi/10.1098/rspb.2014.1639

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