In his 2009 book Why Evolution is True professor Jerry Coyne, whom people pay to teach their children, informs his readers that "All vertebrates begin development looking like embryonic fish because we all descended from a fishlike ancestor with a fishlike embryo. We see strange contortions and disappearances of organs, blood vessels, and gill slits because descendants still carry the genes and developmental programs of ancestors."  There's only one problem: it isn't true.
First, humans—and most other vertebrates for that matter—do not "begin development looking like embryonic fish" and second humans do not have gill slits at any embryonic stage.
This is yet another example of evolution corrupting science. It is the worst of bad theory infecting science with misrepresentations of the empirical evidence.
All of this is the result of religious conviction that penetrated scientific thinking long before Darwin. Like a Trojan horse, evolutionary thinking injected religious mandates into science, and now science is constrained to the absurd. Garbage in, garbage out. You can see more examples here, here, here, here and here.