Phenotypes associated with this allele

• Allele Symbol: Dll3^pu
• Allele Name: pudgy
• Allele ID: MGI:1857008
• Summary: 2 genotypes

Jump to	Allelic Composition	Genetic Background	Genotype ID
hm1	Dll3^pu/Dll3^pu	involves: 101/Rl * C3H/He * C3H/Rl * C57BL/6	MGI:3703152
hm2	Dll3^pu/Dll3^pu	involves: 101/Rl * C3H/Rl	MGI:2173255

Genotype
MGI:3703152

hm1

• Allelic Composition: Dll3^pu/Dll3^pu
• Genetic Background: involves: 101/Rl * C3H/He * C3H/Rl * C57BL/6

• ♀: phenotype observed in females
• ♂: phenotype observed in males
• N: normal phenotype

growth/size/body

decreased body length ( J:75954 )

• truncation of the body

limbs/digits/tail

short tail ( J:75954 )

• tail is short, however it is longer than in Dll3^tm1Rbe homozygous embryos

skeleton

abnormal skeleton morphology ( J:75954 )

• at E14.5, defects in the preskeleton are very similar to those of Dll3^tm1Rbe homozygous embryos

• skeletal dysplasia of embryos is less severe than seen in Dll3^tm1Rbe homozygous embryos

rib fusion ( J:75954 )

abnormal vertebrae morphology ( J:75954 )

• misaligned vertebrae

Genotype
MGI:2173255

hm2

• Allelic Composition: Dll3^pu/Dll3^pu
• Genetic Background: involves: 101/Rl * C3H/Rl

mortality/aging

postnatal lethality, incomplete penetrance ( J:14975 )

• reduced viability after birth

growth/size/body

decreased body length ( J:14975 )

• the whole trunk region is shortened

embryo

abnormal presomitic mesoderm morphology ( J:48518 )

• presomitic mesoderm is thickened and disorganized at E9.5

abnormal somite development ( J:14975 , J:48518 )

• homozygotes exhibit defective segmentation; although the paraxial mesoderm forms somite tissue with an epithelially arranged outer layer, this material either shows only an abortive segmentation into somites or, in the tail, none at all (J:14975)

• somites are not clearly defined along the tail, are irregular in shape, and the intersegmental fissures are less well defined (J:14975)

• presomitic mesoderm is thickened and disorganized at E9.5 and segmental borders between epithelial somites are not formed (J:48518)

abnormal rostral-caudal patterning of the somites ( J:48518 )

• the boundaries between rostral-caudal compartments within somites are severely disrupted as indicated by abnormal spatial localization of various gene markers

abnormal somite border morphology ( J:14975 , J:48518 )

• the intersegmental fissures are less well defined and are not always strictly parallel to each other, unlike in control embryos (J:14975)

• at E9.5 segmental borders between epithelial somites are not clearly formed (J:48518)

abnormal somite shape ( J:14975 , J:48518 )

• somites appear irregular in shape (J:48518)

abnormal somite size ( J:48518 )

• somites appear irregular in size

delayed somite formation ( J:14975 )

• in the tail, the paraxial mesoderm is formed into solid somite tissue with some delay and in a less orderly fashion

skeleton

abnormal cranium morphology ( J:14975 )

• anomalies in the skull in the immediate vicinity of the foramen magnum

sternebra fusion ( J:14975 )

• fusions between adjacent sternebrae, often at an angle, are common

abnormal rib morphology ( J:14975 )

• ribs are irregular, particularly in the caudal half of the thoracic region, where the ribs tend to be bunched together

rib bifurcation ( J:48518 , J:324821 )

rib fusion ( J:14975 , J:48518 , J:324821 )

• irregular rib fusions (J:14975)

kyphosis ( J:14975 )

lordosis ( J:14975 )

abnormal vertebrae morphology ( J:14975 , J:48518 )

• vertebral column consists of a jumble of vertebrae and fragments of vertebrae (J:14975)

• deformed vertebrae (J:48518)

decreased caudal vertebrae number ( J:14975 )

vertebral fusion ( J:14975 , J:324821 )

• highly irregular fusions between vertebrae and fragments of vertebrae (J:14975)

• fusions are seen (J:324821)

• however, the spinous process at T2 is present and distinct (J:324821)

short vertebral column ( J:14975 )

• shortened all along its length

abnormal sclerotome morphology ( J:14975 )

• sclerotome tissue remains continuous and gives rise to abnormal blastema which then chondrify and ossify

muscle

abnormal dermomyotome development ( J:14975 )

• segmentation into the dermomyotome is belated

abnormal multifidus muscle morphology ( J:324821 )

• significant changes in the cranial border of the multifidus muscle

nervous system

abnormal brain ependyma morphology ( J:48518 )

• 3 of 6 adults show unusual unilateral and bilateral cysts in the lateral ventricular ependymal linings

abnormal dorsal root ganglion morphology ( J:48518 )

• spinal ganglia are irregularly formed and unevenly spaced

fused dorsal root ganglion ( J:14975 )

• spinal ganglia is an almost continuous mass instead of being separate from each other as in wild-type

abnormal spinal nerve morphology ( J:48518 )

• spinal nerves are irregularly formed and unevenly spaced

limbs/digits/tail

decreased caudal vertebrae number ( J:14975 )

short tail ( J:14975 )

• tail is reduced to a small stub or is all but absent

thin tail ( J:14975 )

• tails are thinner distally and are pointed at the tip at E14

behavior/neurological

abnormal sexual interaction ( J:14975 )

• mutants are poor breeders

craniofacial

abnormal cranium morphology ( J:14975 )

• anomalies in the skull in the immediate vicinity of the foramen magnum