Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_26957063_3 ( _percentage_identity_to_c7orf38 INTEGER, genus_ VARCHAR, _species VARCHAR )

### Question ###
What is the % identity to C7orf38 of the animal whose genus & species is Mus Musculus?

### Accurate SQL ###

SELECT MAX(_percentage_identity_to_c7orf38) FROM table_26957063_3 WHERE genus_ & _species = "Mus musculus"