Abnormally small penis. At birth, the normal penis is about 3 cm (stretched length from pubic tubercle to tip of penis) with micropenis less than 2.0-2.5 cm. (Human Phenotype Ontology, HP_0000054)
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6 genes co-occuring with the biological term micropenis in literature-supported statements describing functions of genes from the GeneRIF Biological Term Annotations dataset.