Females have two uteri and two ovaries. Adult females have two functional ovaries and two functional uteri. In marsupials the uterus forms as a duplex organ of two uteri. Certain gynecological conditions are dependent on estrogen, such as endometriosis, leiomyomata uteri, and uterine bleeding. Mature females have a single functional ovary and two functional uteri. Female marsupials have paired uteri and cervices. Disruptions to this stage of development can result in didelphys or bicornuate uteri anomalies. Adult females have a single functional ovary, on the right, and two functional uteri. Each female has a single functional ovary (on the right side) and two functional uteri. Compartments form inside the uteri during pregnancy, one for each embryo. Physically, the mature females have considerably wider uteri than their maturing counterparts. Male sugar gliders have a bifurcated penis to correspond with the two uteri of females. The single vagina, to which both uteri are connected, runs outward to the gonopore. Females have two functional uteri and give birth to litters of six to 12 pups. Some other women were also reported to be pregnant at that time using transplanted uteri.