It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
There are a number of ways that the Rhesus factor can manifest in a person: -/-, -/+, +/+, +/-. If their was a connection between rh negativity and the absence of this wrist muscle, I would expect it to be most prevalent in rh -/- people. That is the rares combination.
reply to post by VoidFire
You're either seeing the palmaris longus and another tendon or two other tendons and no palmaris longus, depending on their alignment. Thanks for the comments