What was accomplished here occurs in nature, in a condition called sex-hormone discordant chimerism, where replication errors in embryos result in persons who have a mix of otherwise identical (in terms of genetics) male and female cells in their body. In very rare cases this can result in intersex morphology (https://www.nature.com/articles/s10038-020-0748-4). Generally in mammals, though, such chimerism doesn't result in dramatic phenotypic variance from normal male/female morphology. This is because mammalian secondary sex characteristics expressed by cells are mostly determined by the hormone bath the cells live in, so if a body has wholly or overwhelmingly one-sex gonads, they will develop as that sex. The situation is quite different in insects in birds, where secondary sex characteristics are largely determined by the sex chromosomes of individual cells. This leads to some dramatic phenotypes, such the bilateral gynandromorph (e.g., https://www.birdnote.org/listen/shows/cardinal-thats-half-ma...).