mortality/aging
• lethality around E9 to E10
|
growth/size/body
• truncated head at E9.5
|
• most mutants at E8.5 appear retarded in development, resembling E8 embryos
(J:28303)
• developmental delay at E9.5
(J:147293)
|
embryo
• exhibit duplication of the embryonic axis and parts of the embryo
|
• most mutants at E8.5 appear retarded in development, resembling E8 embryos
(J:28303)
• developmental delay at E9.5
(J:147293)
|
• the posterior end of the primary embryo protrudes through the visceral yolk sac in to the yolk cavity
• some embryos have extra structures near the head folds, often protruding through the yolk sac and in other cases, the head folds appear to protrude through the yolk sac
|
• E8.5 embryos exhibit duplication of anterior axial mesoderm
|
• by E9.5, the head folds usually failed to close
(J:28303)
• open head folds
(J:147293)
|
• some exhibit two allantoises connected to the placenta
|
• abnormal accumulation of cellular debris in the amniotic cavity
|
cardiovascular system
• seen in severely affected mutants
(J:28303)
|
• heart appears normal in most cases, however occasionally the pericardium is abnormally expanded
(J:28303)
|
nervous system
• by E9.5, the head folds usually failed to close
(J:28303)
• open head folds
(J:147293)
|
• forebrain is absent or severely underdeveloped by E9.5
|
• forebrain is absent or severely underdeveloped by E9.5
|
craniofacial
• truncated head at E9.5
|