#!/usr/bin/perl
use strict;
use warnings;
#assign strings to variables
my $DNA = "GATTACACAT";
my $polyA = "AAAA";
#concatenate two strings
my $modifiedDNA = $DNA.$polyA;...
#!/usr/bin/perl
use strict;
use warnings;
#assign strings to variables
my $DNA = "GATTACACAT";
my $polyA = "AAAA";
#concatenate two strings
my $modifiedDNA = $DNA.$polyA;...