mortality/aging
• pups die during the postnatal period between P13-21; none survive beyond 21 days
|
growth/size/body
• lack of maturation of the ear structure
|
• weight is lower than wild-type from P2 onward, with a clear difference noted at 7 days after birth; weights decreased 1-2 days prior to death at ~P14
|
behavior/neurological
• no righting reflex develops even by 21 days of age, whereas wild-type controls show reflex by 8 days of age
|
• splayed feet and legs
|
abnormal gait
(
J:76453
)
• null mice are born at frequency of 20% instead of expected 25%
|
nervous system
• cerebral hemispheres are transulucent in 12-day old mice, whereas they are opaque in wild-type littermates
|
hearing/vestibular/ear
• lack of maturation of the ear structure
|
vision/eye
• failure of eyelids to open; sealed even on P21, while littermates open on P8 to 12
|
craniofacial
• lack of maturation of the ear structure
|