HAIRLINE SHAPE

 

HAIRLINE SHAPE

A very slender line, the lower edge of the hair, especially along the upper forehead.

Dominantly inherited trait: widow’s peak (a V-shape) at the hairline. Let (W) represent the dominant allele, and (w) represent the recessive allele. 

 An individual with a (WW) or (Ww) genotype will have a V-shaped peak at the hairline.

Only ww individuals will have a straight hairline.