Waist-to-hip ratio

With the help of anthropomorphism some shapes can be compared with the human figure. The ratio between waist and hips is called the 'waist-to-hip' (WTH) ratio. Its effect is highly biologically determined and has to do with the physical attraction between the sexes. Waist-to-Hip ratio = circumference waist / circumference hip Research by a medical … Continue reading Waist-to-hip ratio

Colour genes

Opsins (protein molecules which serve as visual pigments sitting in the cones and rods) are made under the influence of genes. DNA differences result in opsins that are sensitive to different colours. Since all genes are present in all cells, the difference between a red cone and a blue cone is not which genes they … Continue reading Colour genes