HORTICULTURE

Detailed explanation-1: -Many people believe that American biologist James Watson and English physicist Francis Crick discovered DNA in the 1950s. In reality, this is not the case. Rather, DNA was first identified in the late 1860s by Swiss chemist Friedrich Miescher.

Detailed explanation-2: -In 1950, biochemist Erwin Chargaff found that the arrangement of nitrogen bases in DNA varied widely, but the amount of certain bases always occurred in a one-to-one ratio. These discoveries were an important foundation for the later description of DNA.

Detailed explanation-3: -James Watson and Francis Crick with their DNA model at the Cavendish Laboratories in 1953.