Prostate Is the Uterus: The Biology They Didn't Tell You

Embryology shows the penis and clitoris are homologous, and the prostate derives from the uterus. A 385-million-year journey from fish to humans.

English · Original discussion in Spanish · Published

Men are not an opposite sens, but a modified version of females

Embryology makes this clear: until weeks 6-7 of gestation, all human embryos are structurally female. The genital tubercle, labioscrotal folds, and Müllerian ducts are identical. Only the action of the SRY gene on the Y chromosome diverts development toward the male phenotype: the clitoris elongates and fuses to form the penis, the lips become the scrotum, and the ovaries descend transforming into testes. The prostate, meanwhile, is the functional equivalent of the uterus: it derives from the Müllerian ducts and, though vestigial, retains structures like the prostatic utricle. This is not a metaphor: it is the basis of reproduction for all vertebrates.

From fish to humans: the origin of copulation

385 million years ago, placoderms like Microbrachius dicki developed internal fertilization. A study led by paleontologist John Long (Nature!) showed these fish already had copulatory organs. The evolution of the penis is actually an adaptation to inject leche near the uterus, avoiding competition from other males and vaginal acids that act as a natural contraceptive. The female orgasm, with its contractions, shares the same origin as egg expulsion in fish: a biochemical inheritance to facilitate fertilization.

The controversy: endocrine disruptors and gaiity?

Some currents extend homology to the neurological realm, suggesting that certain sensual orientation patterns result from incomplete brain development during gestation, influenced by endocrine disruptors like bisphenols. Evidence in animals is solid: pesticides turn male fish into functional females and atrophy penises in alligators. However, the leap to human sensual orientation lacks solid scientific backing. The scientific community notes that while disruptors cause physical anomalies, there are no conclusive studies linking gaiity to pollutant exposure.

The debate reflects a tension between basic biology and its ideological interpretations. While embryological homology is unquestionable, sarracena and social extrapolations remain in swampy territory. The only certainty is that the human body holds a 385-million-year fossil record of evolution. And that writing cannot be erased by rhetoric.

Summary of a discussion on Burbuja.info - Foro de economía, actualidad y política., translated from Spanish and reviewed before publication. Read the full discussion (223 replies).

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