mortality/aging
• less than 40% survive to weaning
|
• 60% of presumptive homozygotes die by weaning
|
limbs/digits/tail
long toenails
(
J:14112
)
• seen at birth
|
• digits of hindlimbs twist laterally with pads facing inward
• severe on hind feet; less obvious on front feet
|
• shortening of phalanges is so extreme only the nails define position of the toes
|
syndactyly
(
J:14112
)
• soft tissue fusions involve digits 2 and 3, sometimes 4
|
• metatarsals of hindlimbs twist outward more severely than in the heterozygote
|
• on hindlimbs
• function of proximal joints is lost resulting in little or no flexing ability
|
• in regions where the tail kinks
|
kinked tail
(
J:14112
)
• seen at birth
• dorsal and upward kinking and a hook forms near the tail tip
|
skeleton
• shortening of phalanges is so extreme only the nails define position of the toes
|
• metatarsals of hindlimbs twist outward more severely than in the heterozygote
|
• on hindlimbs
• function of proximal joints is lost resulting in little or no flexing ability
|
• function of proximal joints of metatarsals of hindlimbs is lost resulting in little or no flexing ability
|
• in regions where the tail kinks
|
reproductive system
integument
• severe on hind feet; less obvious on front feet
|
• nails overgrow and twist, more obviosu than in the heterozygote
|
long toenails
(
J:14112
)