<s>[INST] <<SYS>> This is a medical question of type : inheritance <</SYS>> Is recurrent hydatidiform mole inherited ? [/INST] This condition is often inherited in an autosomal recessive pattern, which means a woman has to have mutations in both copies of the gene in each of her cells to have recurrent hydatidiform mole pregnancies. Because the mutations are present in all of a woman's cells, including oocytes (which need these genes to promote normal embryonic development), a hydatidiform mole will develop in each pregnancy that occurs with those egg cells. </s>