mortality/aging
|
• most heterozygous mutants die in utero, very few survive to birth or weaning
|
skeleton
|
• 30% show severe sternum defects
|
|
• mutants often have a transformation of the 4th sternebra into the morphology of the fifth, with three pairs of ribs articulating instead of two, and the fifth sternebra is absent
|
|
• the most posterior thoracic vertebrae lacks ribs on either one or both sides
• 2 of 12 mutants have extra ribs emerging from the 7th cervical vertebrae
|
|
• 3 of 12 mutants have 12 thoracic vertebrae instead of 13, the most posterior one lacking ribs on either one or both sides
|
|
• all mutants exhibit a rib-like small articulation on the 7th cervical vertebrae (C7)
• 2 of 12 mutants have extra ribs emerging from C7
|
|
• the axis (C2) is abnormal
|
|
• 40% exhibit a split neural arch in T10
|
|
• posterior transformations
|
|
• C6 is abnormal, with either the loss of the anterior tuberculi or improper fusion of the anterior tuberculi to the vertebral bone resulting in a vertebra that has a truncated tuberculi and resembles C7
|
embryo
|
• the midline is chaotic at E8
|
|
• posterior neuropore region is ill formed at E8
|
|
• somitic condensations are hardly visible or undetectable at E8; when seen, somites are not properly condensed
|
nervous system
|
• posterior neuropore region is ill formed at E8
|
reproductive system


Analysis Tools