The 271C --> T and 304G --> A can be identified by restriction enzyme-generated restriction fragment length polymorphisms .
the 271c --> t and 304g --> a can be identified by restriction enzyme-generated restriction fragment length polymorphisms .
O B-nucleotide O B-nucleotide O B-nucleotide O B-nucleotide O O O O B-DNA_family_or_group I-DNA_family_or_group I-DNA_family_or_group I-DNA_family_or_group I-DNA_family_or_group I-DNA_family_or_group O