Phenotypes associated with this allele

• Allele Symbol: smas
• Allele Name: small and shakes
• Allele ID: MGI:5779183
• Summary: 1 genotype

Jump to	Allelic Composition	Genetic Background	Genotype ID
hm1	smas/smas	STOCK smas/GrsrJ	MGI:5779189

Genotype
MGI:5779189

hm1

• Allelic Composition: smas/smas
• Genetic Background: STOCK smas/GrsrJ

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

reproductive system

reduced female fertility ( J:232396 )

• both male and female homozygotes are poor breeders

reduced male fertility ( J:232396 )

growth/size/body

decreased body size ( J:232396 )

• homozygotes are distinctly smaller than unaffected littermates by approximately 5 days of age

behavior/neurological

abnormal motor capabilities/coordination/movement ( J:232396 )

• when raised by the tail, homozygotes fail to splay their hind legs outward as if due to a weakness in the hind legs

tremors ( J:232396 )

• Background Sensitivity: whole body tremor that presents at wean age and persists throughout life is more evident when C57BL/6J is in the genetic background than when BALB/cByJ predominates