Perform a hypergeometric test, also known as the Fisher's exact test, on a 2x2 contingency table with the alternative hypothesis 'greater' . In this application, the test finds the probability that counts[1, 1] or more genes would be found to be annotated to a term (pathway), assuming the null hypothesis of genes being distributed randomly to terms.
A 2x2 numerical matrix representing a contingency table.
a p-value of enrichment of genes in a term or pathway.
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