Phenotypes associated with this allele

• Allele Symbol: py
• Allele Name: polydactyly
• Allele ID: MGI:1857010
• Summary: 3 genotypes

Jump to	Allelic Composition	Genetic Background	Genotype ID
hm1	py/py	either: C57BL or CBA	MGI:4457017
hm2	py/py	Not Specified	MGI:4362095
ht3	py/py^+	Not Specified	MGI:4457033

Genotype
MGI:4457017

hm1

• Allelic Composition: py/py
• Genetic Background: either: C57BL or CBA

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

limbs/digits/tail

polydactyly ( J:15553 )

• Background Sensitivity: adjusting the genetic background allows selection for mice with polydactyly on all four feet

Genotype
MGI:4362095

hm2

• Allelic Composition: py/py
• Genetic Background: Not Specified

limbs/digits/tail

abnormal digit morphology ( J:12171 )

preaxial polydactyly ( J:12171 )

• Background Sensitivity: all homozygous mice do not show the trait; introducing outcrosses can increase expression to 90%

• one or both hindfeet may have 6, rarely 7 toes, the first digit being affected

• 48% of mice have bilateral polydactyly; when one foot is involved the right side is favored

• front feet are rarely involved in any cross combination used

Genotype
MGI:4457033

ht3

• Allelic Composition: py/py⁺
• Genetic Background: Not Specified

limbs/digits/tail

polydactyly ( J:106 )

• in an extensive linkage study mice of this genotype were found polydactylous on one foot