The Ramzi Theory
The Ramzi Theory is the earliest gender predictor to be used within the first trimester of pregnancy that detects fetal gender between gestation weeks 6-8. The Theory uses the placenta/chorionic villi location as a marker for fetal gender detection and found to be highly reliable. This method correctly predicts the fetus gender in 97.2% of males and 97.5% of females early in the first trimester.
The Skull Theory
The idea behind The Skull Theory came from the Anthropological approach to the study of humans. Male skulls are known to be more blockier and large compared to the female skull which is more round and delicate, These differences only develop during maturity and many believe in this theory (92% accuracy rating). Although there is no medical evidence to support this gender predictor its a fun way to predict the gender.
The Nub Theory
During the first trimester of pregnancy the developing male and female genitalia changes. Between eleven and sixteen weeks gestation the male and female foetus’ have a penis-like protrusion. This makes them look very similar except for one special element the angle of the protrusion, known as ‘The Angle of The Dangle’.
A male foetal protrusion points approximately 30 degrees up relative to the backbone. The girls’ protrusion is below 30 degrees. Accuracy rating increases much nearer to week fifteen (99.6% males and 97.4% females).