such as "Introduction", "Conclusion"..etc
The Perl program is to
perform concatenation of two sequences
or strings. The concatenation as shown in the line 4 is just done by
placing a dot. Here, the value of $DNA1 is being concatenated with the value of
$DNA2. Hence, we write it as “$DNA1.$DNA2” and store the result as one complete
string in $DNA3.
Enter the code exactly as it appears. All letters are case insensitive, there is no zero.