Asparagus urine. Some people have "hitchhiker's thumbs," which bend backwards with a large angle between the two segments phalanges. The myth is that there are just two kinds of thumbs, straight thumbs S and hitchhiker's thumbs Hand the trait is controlled by a single gene with two alleles, with the allele for S being dominant.
Hitchhiker's Thumb - Curse or Gift? Feb 14, 1. Jan 14, Chicago.
Gene: a region of DNA that instructs the cell on how to build protein s. As a human, you usually get a set of instructions from your mom and another set from your dad Phenotype: the appearance of an individual that results from the interaction between their genetic makeup and the environment.
The thumb is the first digit finger of the hand. When a person is standing in the medical anatomical position where the palm is facing to the frontthe thumb is the outermost digit. The Medical Latin English noun for thumb is pollex compare hallux for big toeand the corresponding adjective for thumb is pollical.
The only useful thing I can think of is the comedy value of seeing people freak out when they see the bendy thumbs in action. I now realise, however, that this is not the case. For one thing, it seems that thumb bendiness is not a simple binary property.
The short thick digit of the human hand, next to the index finger and opposable to each of the other four digits. A corresponding digit in other animals, especially primates. Also called pollex. To scan written matter by turning over pages with or as if with the thumb.
It is used to both describe the appearance of the thumb on physical examination and also the corresponding radiographic appearance. It is similar to how a person would normally angulate and hold out the thumb with the intention to hitchhike. The sign is also used in obstetric ultrasound and on pediatric radiographs to describe the appearance of the fingers in diatrophic dysplasia.
The genome holds the blueprint of our body's architecture, including the shape of our thumb. Some people have a very "bendy" distal joint on their thumbs, called the Hitchhiker's Thumb. In fact, it is postulated that people have this feature. Let's put this to the test by calculating the angle on your thumb and see how it compares with other people.