Dr. Christiane Nusslein-Volhard, a Nobel Prize-winning developmental biologist, has slammed claims that there are miltiple genders as "nonsense" and "unscientific." She dismissed the "woke" ideology that suggests there are more than two genders by noting the scientific facts and warned that letting children determine their own gender is "madness." "All mammals have two sexes, and man is a mammal," she explained during an interview published by the German feminist magazine EMMA, according to an English translation courtesy of Google Translate.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 "There's the one sex that produces the eggs, has two X chromosomes. "That's called female," she notes. "And there's the other one that makes the sperm, has an X and a Y chromosome. That's called male." There are animals that produce both sperm and eggs, such as snails. These animals, therefore can create offspring without having to mate. However, this "does not change the fact that there are two germ cells, eggs and sperm, and therefore two sexes," Nusslein-Volhard asserted. She did not deny that there is variation within the sexes. "There are very 'feminine' men and very 'masculine' women, which not only  has to do with cultural factors, but also with different hormone levels, among other things," she said. "There's a huge spectrum," she added.                                                                                                                                                                                                                                                                                                                                                                         She did, however, insist that one cannot change from male to female or vice versa. Referring to the idea that an individual is whatever gender he or she claims to be, she declared, "That's nonsense!"  "It's wishful thinking," she added. "There are people who want to change their gender, but they can't do it." She explained that gender is built into every single chromosome in the human body and affects each individual's development from the moment of conception. "Nonsense" is also the word she applied to the German Federal Constitutional Court's 2017 ruling that "gender...is also determined by social and psychological factors." "How you feel can be changed by social and psychological circumstances," she explains. "But NOT biological sex. Wherever science is really practiced, this is also completely indisputable."                                                                                                                                                                                                                                                                                                                                                                                                                                                                           Furthermore, she warned that "irreversible interventions" in a futile attempt to change a person's sex can have serious consequences. Surgically removing a girl's breasts or replacing a boys sex organs with fake female ones is, of course, permanent. "But the hormones also add something to the body that is not intended to be there," she said. This intervention causes changes "both physically and psychologically," Nusslein-Volhard continues. "The body cannot handle it well in the long run. Every hormone you take has side effects. Taking hormones is inherently dangerous." It comes as no surprise, therefore, that the eminent scientist is opposed to the government's push to let children as young as 14 choose their own gender. "This is madness !" she exclaimed.                                                                                                                                                                                                                                                                                                                             Nusslein-Volhard is, naturally aware of the fact that science has become increasingly politicized in recent decades, particularly when it comes to sex and gender issues. "Do they now want to abolish biology classes as well?" asked Nusslein-Volhard. "Do we no longer want to know who we are and how gender is determined?  This mix of sensitivity and moral arrogance paired with ignorance is simply fatal."