Figure 3. Details of the eyelash and eyelid phenotypes associated with polledness.

Eyes of a wild-type bull (A), three P_C/p Charolais bulls (B, D and E), and a P_F/p Holstein cow (C). Note the typical eyelid hypertrichosis and accessory rows of lashes in polled animals, with additional hair showing pronounced variability in size and orientation and darker coloration in pigmented animals (C). Arrows show additional hair growing on the inner part of the eyelid (i.e., distichiasis).