CREATE TABLE table_name_39 (mutated_from VARCHAR2, plant_patent_number VARCHAR2)

What's the mutated having a patent number of US plant patent 9645?
SELECT mutated_from FROM table_name_39 WHERE plant_patent_number = "us plant patent 9645"
SELECT "mutated_from" FROM "table_name_39" WHERE "plant_patent_number" = "us plant patent 9645"