Write down a perl program that given a dna string prints

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Reference no: EM13463449

Write a Perl program that given a DNA string, prints out the 20 characters upstream of the start codon ATG. That is, given:

$dna = "CCCCATAGAGATAGAGATAGAGAACCCCGCGCGCTCGCATGGGG";

print out:

The 20 bases upstream of ATG are AGAGAACCCCGCGCGCTCGC

Reference no: EM13463449

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