In your original sample data, every line began with two integers and then a text string. Now you seem to be running it on lines that begin with a single integer and a text string, so his code is picking up the first allele as part of the duplicated section.

Aaron B.
My Woefully Neglected Blog, where I occasionally mention Perl.

In reply to Re^3: How to match duplicate lines in a text file and extract only one of those lines to a new file by aaron_baugher
in thread How to match duplicate lines in a text file and extract only one of those lines to a new file by danica

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