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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Hoxa2tm1(tetO)Mllo
targeted mutation 1, Moises Mallo
MGI:2385709
Summary 3 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Hoxa2tm1(tetO)Mllo/Hoxa2tm1(tetO)Mllo involves: 129S1/Sv MGI:3773619
hm2
Hoxa2tm1(tetO)Mllo/Hoxa2tm1(tetO)Mllo involves: 129S1/Sv * C57BL/6J MGI:3773520
ht3
Hoxa2tm1(tetO)Mllo/Hoxa2tm1Grid involves: 129S1/Sv * C57BL/6J MGI:3773521


Genotype
MGI:3773619
hm1
Allelic
Composition
Hoxa2tm1(tetO)Mllo/Hoxa2tm1(tetO)Mllo
Genetic
Background
involves: 129S1/Sv
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hoxa2tm1(tetO)Mllo mutation (0 available); any Hoxa2 mutation (21 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• segmentation and patterning of rhombomere 2 and 3 are disrupted as determined by marker expression patterns

embryo
• segmentation and patterning of rhombomere 2 and 3 are disrupted as determined by marker expression patterns




Genotype
MGI:3773520
hm2
Allelic
Composition
Hoxa2tm1(tetO)Mllo/Hoxa2tm1(tetO)Mllo
Genetic
Background
involves: 129S1/Sv * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hoxa2tm1(tetO)Mllo mutation (0 available); any Hoxa2 mutation (21 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mice die within 24 hours of birth
• however, mice feed and appear normal at 4 hours after birth

skeleton
• the lesser horn of the hyoid bone is smaller or absent compared to in wild-type mice
• despite middle ear abnormalities mice do not exhibit any duplications in middle ear structures as observed in other Hoxa2 null mice
• the malleus shows an underdevelopment of the processus brevis
• the stapes shape is abnormal without arch and the stapes does not articulate with the incus
• the stapes does not articulate with the incus

digestive/alimentary system
• tongue and hyoid musculature exhibit abnormal insertion
• mice exhibit a cleft in the posterior portion of the tongue

muscle
• tongue and hyoid musculature exhibit abnormal insertion

cardiovascular system

nervous system
N
• mice exhibit normal hindbrain organization

hearing/vestibular/ear
N
• mice exhibit normal external ear morphology
• despite middle ear abnormalities mice do not exhibit any duplications in middle ear structures as observed in other Hoxa2 null mice
• the malleus shows an underdevelopment of the processus brevis
• the stapes shape is abnormal without arch and the stapes does not articulate with the incus

craniofacial
• the lesser horn of the hyoid bone is smaller or absent compared to in wild-type mice
• despite middle ear abnormalities mice do not exhibit any duplications in middle ear structures as observed in other Hoxa2 null mice
• the malleus shows an underdevelopment of the processus brevis
• the stapes shape is abnormal without arch and the stapes does not articulate with the incus
• tongue and hyoid musculature exhibit abnormal insertion
• mice exhibit a cleft in the posterior portion of the tongue

growth/size/body
• tongue and hyoid musculature exhibit abnormal insertion
• mice exhibit a cleft in the posterior portion of the tongue




Genotype
MGI:3773521
ht3
Allelic
Composition
Hoxa2tm1(tetO)Mllo/Hoxa2tm1Grid
Genetic
Background
involves: 129S1/Sv * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hoxa2tm1Grid mutation (0 available); any Hoxa2 mutation (21 available)
Hoxa2tm1(tetO)Mllo mutation (0 available); any Hoxa2 mutation (21 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hearing/vestibular/ear
• the stapedial artery is displaced rostrally compared to in wild-type mice
• the oval window of the otic capsule is absent
• mice exhibit extra cartilage structures in the middle ear
• however, the gonial bone is normal
• while the shape of the malleus is normal it remains attached via a small bridge to the extra cartilage found in the middle ear
• the morphology of the tympanic ring is shorter than in wild-type mice and exhibits a small membranous element close to the distal end

craniofacial
• the oval window of the otic capsule is absent
• the lesser horn of the hyoid bone is smaller or absent compared to in wild-type mice
• mice exhibit extra cartilage structures in the middle ear
• however, the gonial bone is normal
• while the shape of the malleus is normal it remains attached via a small bridge to the extra cartilage found in the middle ear
• some mice exhibit a cleft palate
• tongue and hyoid musculature exhibit abnormal insertion

digestive/alimentary system
• some mice exhibit a cleft palate
• tongue and hyoid musculature exhibit abnormal insertion

cardiovascular system
• the stapedial artery is displaced rostrally compared to in wild-type mice

muscle
• tongue and hyoid musculature exhibit abnormal insertion

nervous system
N
• mice exhibit normal hindbrain organization
• only one mouse exhibited abnormal contributions of r4 neurons to the facial nerve

skeleton
• the oval window of the otic capsule is absent
• the lesser horn of the hyoid bone is smaller or absent compared to in wild-type mice
• mice exhibit extra cartilage structures in the middle ear
• however, the gonial bone is normal
• while the shape of the malleus is normal it remains attached via a small bridge to the extra cartilage found in the middle ear

growth/size/body
• some mice exhibit a cleft palate
• tongue and hyoid musculature exhibit abnormal insertion





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last database update
11/12/2024
MGI 6.24
The Jackson Laboratory