Which Allele Pattern Do People With Hitch Hiker Thumbs Have?
Which Allele Pattern Do People With Hitch Hiker Thumbs Have? Some people with hitchhiker’s thumb may have acquired two recessive copies, or alleles, of the gene that determines thumb straightness. This means that the trait for hitchhiker’s thumb was present in both parents of the person born with it. Is hitchhikers thumb a discrete trait?