Definition of evidence. 1a : an outward sign : indicationb : something that furnishes proof : testimony; specifically : something legally submitted to a tribunal to ascertain the truth of a matter.
Fifty years ago, James Watson and Francis Crick announced to patrons in a Cambridge pub that they had just discovered the secret of life. Their discovery was that the DNA double helix explained how cells divide and develop.ifty years ago, James Watson and Francis Crick announced to patrons in a Cambridge pub that they had just discovered the secret of life. Their discovery was that the DNA double helix explained how cells divide and develop.
Report Abuse. DNA structure DNA structure was first described by James Watson and Francis Crick in 1953. Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions for the development and function of living organisms.All living things contain DNA, with the exception of some viruses with RNA genomes.he nucleotides are joined in such a way that they form a double helix that is like a twisted rope ladder. The steps of the ladder are made by the paired nitrogen bases of opposing nucleotides. A-T and C-G The sides of the ladder are alternating sugars and phosphates.