Eva, the 2 Brits, Watson and Crick, used X-ray crystallography to determine the structure of DNA. Their findings were published in the publication, Nature. The first person (s) who publish a discovery in a recognized scientific journal are given credit for that discovery. And, yes, just about all the Nobel Prizes in Physics, Chemistry and Medicine have been awarded to white males mainly from the US, the UK, Germany and France. And, it this bothers you, contact our feminist Prime Minister who will take this problem to the UN, the problem being that women are "wired" different from men when it comes to abstract, complex thought.