In a 2003 study looking at histocompatibility complex genes, symmetry, and body scent attractiveness in men and women researchers asked 200 males and females to provide a blood sample to assess their major histocompatibility complex (MHC) gene, then to sleep a new clean T-shirt for two nights. Researchers also took photos of the males and females to document left- and right-side body symmetry. When the participants were asked about attractiveness, their answers indicated that the:
A) men preferred T-shirts from women with similar MHC.
B) men preferred T-shirts from women with dissimilar MHC.
C) women preferred T-shirts from men with similar MHC.
D) tmen preferred T-shirts from asymmetrical women.

Question

Quizplus · Accepted Answer

The study found that men preferred T-shirts from women with dissimilar MHC genes, which suggests an evolved genetic preference for mates with dissimilar immune systems to increase offspring's immune system diversity and ability to fight off diseases. There was no evidence to suggest that men preferred T-shirts from women with similar MHC or preferred T-shirts from asymmetrical women. The study did not explore women's preferences for male body scent.

In a 2003 Study Looking at Histocompatibility Complex Genes, Symmetry