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 possess, but which gene they turn on.

The genes that make our green and red opsins are very similar to each other, and they are on the X chromosome (the sex chromosome of which females have two copies and males only one). The gene that makes the blue opsin is a bit different, and lies not on a sex chromosome but on one of the ordinary non-sex chromosomes called autosomes. Our green and red cells have clearly been derived from a recent gene duplication event, and much longer ago they must have diverged from the blue opsin gene in another duplication event.

Dawkins (2004).

As the colour of life green is feminine. In the west, the connection between the colour green and the feminine is almost forgotten. This idea is still alive in China.
Heller (1989)

The belief in vampires or Beregyni is common among all Slavic peoples. The basic meaning of the word seems to be ‘flying creature’ (Russian parit = to hover; pero = feather, plume). A vampire is understood to mean the spirit of a dead person or a corpse brought to life by the evil spirit. The vampire sucks the blood of people and animals, which results in death. Belief in vampires has developed strongly, especially in the Balkans and among the Ukrainians. A vampire is rendered harmless by opening the grave and piercing the corpse with a hawthorn branch, after which the corpse is burned.

The vampire appears in many guises. Sometimes he is hairy like a dog, with bloody eyes and teeth. It is also widely believed that he has no bones and is only a sack filled with blood. This is created when the devil rips off the skin of a corpse and blows it up.

The vampires or Beregyni grew out of the cult of the ancestors, the oldest stage of Slavic paganism dating back to the earliest antiquity, to the very origins of human culture. Originally they are mainly female nymphs and spirits of the dead. The deepest roots of the clan god couple (Rod-Rozanica, Artemid-Artemis, Isis-Osiris, etc.) therefore reach to the death cult.

(Vyncke, 1969)

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 department at the University in Maryland shows that people with a high Waist-to-Hip ratio are more likely to have health problems than people with a low Waist-to-Hip ratio (University of Maryland, 2013).

Furnham, e.a. (1998) concluded that bodies with a low Waist-to-Hip ratio were seen as feminine and healthy, while bodies with a high Waist-to-Hip ratio were seen as masculine and unhealthy.

Attractiveness varies by gender. Women with a low Waist-to-Hip ratio are seen as more attractive than women with a high Waist-to-Hip ratio. In men, however, this is exactly the other way around. With a high Waist-to-Hip ratio, men are considered more attractive than with a low Waist-to-Hip ratio (Furnham, e.a. ,1998).

Shapes with a high Waist-to-Hip ratio look more solid than those with an hourglass shape. An hourglass shape looks more modern than a shape with a high Waist-to-Hip ratio (Roebers, 2013).