Planar cell polarity and cell rearrangements drive Wolffian duct morphogenesis.
PTK7 regulates PCP and unique cell rearrangements necessary for convergent extension.
Polarized activity of myosin underlies convergent extension cell rearrangements.
Cell division orientation along the ductal axis is random, and not regulated by PTK7.
PTK7 maintains proper WD morphogenesis, which is necessary for sperm maturation.