Hi I have file containing two columns, Genes and Genetype. I would like to create a hash where the gene is the key and the genotype is the value. I then would like to count and print out how many genes have a specific genotype. So for example: CECR1 protein_coding IKBKGP1 pseudogene ADA protein_coding I would like to have an output: protein_coding 2 pseudogene 1 I have come this far: 

#open the textfile GeneType.txt
open (GENETYPE, "GeneType.txt") or die "Could not open file";


while (<GENETYPE>){
    ($GeneName, $GeneType)= split (/\t/, $_);
    $GeneHash{$GeneName} = $GeneType; #create hash
    my $scalar = delete $GeneHash{GeneName}; #removes the first line w
+hich is a header
    print (each %GeneHash); #printing out the has just as a check

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I am guessing I should use a for or foreach loop to iterate over the hash, but can't understand how. Thanks /beginner

In reply to Number of values for each key in hash by Sofie

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