What discovery in the 1900s supported Mandela ideas?

In the 1900s, the discovery of the structure of DNA by James Watson and Francis Crick in 1953 supported Nelson Mandela's ideas about the interconnectedness of humanity and the importance of equality. This scientific breakthrough highlighted that all humans share a common genetic foundation, reinforcing the notion that differences in race or ethnicity are superficial. Mandela's advocacy for human rights and equality aligned with the understanding that all individuals deserve respect and dignity, regardless of their background. This discovery provided a biological basis for the idea of unity and equality among all people.