Dear Maria,
Thanks for joining in the discussion and for providing additional resources.
One of the reasons for not including widow's peak in the survey is that it would require more effort to change the cgi scripts use to create the data charts than would be gained by having the additional data.
At first, I intended to include tongue-rolling in the survey. However, I discovered that some individuals were able to "learn" to roll their tongues. This brought into doubt the commonly-held belief that tongue tongue-rolling ability is inherited. Some texts still include it.
You are welcome to join as a participant in the spring...or next year if that is more convenient.
The Genetics Project is maintained with WebBBS 2.14.