Updated: Dec. 30 (2023)
Cowlick
Cowlick, cw/cw
Two copies of the recessive Cowlick
Chromosome: Unknown
Quote from Three New Mutaions of the Rat: First discovered in 1947 by Dr. H. P. Donald. The character consists of a hair whorl on the back (Figure 3 C and D). Normally the hair on the dorsal surface slopes backward from nose to tail. In a cowlick individual a reversal of the hairslope is found at a point lying near the middle of the back or between that pointand a point on the back of the head just behind the ears. From the point of reversal the hair slopes outward in alldirections for a certain distance. The character is most conspicuous when the center of reversal is well posterior, as seen in Figure 3 C and D. When the center is far forward on the neck, the character is observed only as a forward directed tuft of hair between the ears, which may escape observation altogether.
Sources:
Two copies of the recessive Cowlick
Chromosome: Unknown
Quote from Three New Mutaions of the Rat: First discovered in 1947 by Dr. H. P. Donald. The character consists of a hair whorl on the back (Figure 3 C and D). Normally the hair on the dorsal surface slopes backward from nose to tail. In a cowlick individual a reversal of the hairslope is found at a point lying near the middle of the back or between that pointand a point on the back of the head just behind the ears. From the point of reversal the hair slopes outward in alldirections for a certain distance. The character is most conspicuous when the center of reversal is well posterior, as seen in Figure 3 C and D. When the center is far forward on the neck, the character is observed only as a forward directed tuft of hair between the ears, which may escape observation altogether.
Sources:
- Three new mutations of the rat, Shaker, Cowlick, Naked
- Genetics of the Norway Rat (Page 48)
- Cowlick is bred by Evolution Rattery (Facebook post 1 & Facebook post 2)