 20 p-psr666 genomic DNA psr666 BBABAAA-BABABABA-AABBAABABAABBAABBAA-AAABABABBAAABABABBA-ABAABAAABAAAB--A-AAABBABAA-AA-ABBB--A-BBABAAA---BAABAA---A-BAABAA-BBAAABAAABAAAB-BBAABAB-BAAB-BAAAB-AB--AAA-AAABBBABBAAABAABB---AAABBAA-ABAAA-AAABB-AAA-BA-AABAABA-A-A-BAABAAABAAABAA-AAABAAAB-AAA-ABB--A-AAA-ABA 