More info about dominant allele: http://k12science.ati.stevens-tech.edu/curriculum/genproj/traits.html

A text summary of the clickable map above, meant for web-crawlers and other automatic tools:
dominant allele produces tongue curling ability
dominant allele produces bent little finger
dominant allele produces brown, black, or red hair
dominant allele produces pigmented eye
dominant allele produces curly hair
dominant allele produces mid-digital hair
dominant allele produces widow's peak
dominant allele type of allele