use it to get a lift.
Hitchhiker's thumb is caused by a dominant allele. Individuals with at least one copy of the dominant allele will exhibit the thumb's characteristic flexibility, while those with two recessive alleles will have a straight thumb. This trait is a classic example of simple Mendelian inheritance.
No, the hitchhiker's thumb refers to a genetic trait that allows the thumb to bend backward at an angle greater than 90 degrees. It is not a gesture but a physical characteristic.
the boys have different alleles
The ability to hitchhike (extend the thumb back to a right angle to the hand) is typically considered a dominant trait. This means that if one parent has the ability to hitchhike and the other does not, their offspring are likely to inherit the dominant trait and be able to hitchhike.
use it to get a lift.
Like in a box?
80
Well the straight thumb is dominant while the hitch hikers thumb is recessive
The brothers have different alleles. They received different alleles from their parents
No, the hitchhiker's thumb refers to a genetic trait that allows the thumb to bend backward at an angle greater than 90 degrees. It is not a gesture but a physical characteristic.
They could have hitchhikers thumb, widows peaks, attached earlobes, and the ability to roll the tongue.
They could have hitchhikers thumb, widows peaks, attached earlobes, and the ability to roll the tongue.
They could have hitchhikers thumb, widows peaks, attached earlobes, and the ability to roll the tongue.
Having different alleles would cause this.
fdfd
No. strickly speaking hitchhikers thumb is autosomal recessive. that means each parent has two copies of the gene if they are true "hitchhikers". That means the only possible outcome is that all offspring will also have two copies. Of course if one of the parents is just hyperextendible and does not have the genes that's different. The child could also just not be very extendible but have the genes. But genetically there is no other options.