What year was the first model of DNA?

Answer 1

DNA (Or DeoxyriboNucleic acid) was never invented; it has existed on earth for as long as life has been present, though people did find out about it eventually.

The shape of DNA was discovered in 1953 by Francis Crick and James Watson. DNA was discovered to be the genetic material in the 1944 by Avery and coworkers.

Answer 2

DNA was discovered by a Swiss scientist, Friedrich Miescher, in 1869.

In 1953 James Watson and Francis Crick proposed the double-helix structure for the molecule, and by 1966 the genetic code (i.e. which amino acids were coded for by which sequences of DNA bases, and what the remaining codons "meant", ) had been completely worked out.

While examining the DNA molecule, Watson and Crick (1953), proposed a satisfactory model for the arrangement of these constituents. For this important contribution to science they were given the 1962 Nobel Prize. They hypothesized from X-ray analysis of the molecule that DNA consists of two strands, twisted in a spiral (or helix) shape. This shape resembles a twisted ladder with rungs between the two uprights. The "uprights" of this ladder are made entirely of alternating phosphate and sugar molecules. The rungs are composed only of the nitrogen bases, which are attached to the sugar. The phosphate-sugar-base is called a nucleotide. The base of the nucleotide from one "upright" of the ladder is paired with and bonded to the base of the nucleotide from the other side of the ladder, completing the rung between the two uprights. A nucleotide having adenine is always cross-paired with thymine, and one with cytosine is always bonded to guanine.

Answer 3

DNA wasn't invented but in the 1950's Watson and Crick concluded that it was genetic material and discovered the structure of it.

Answer 4

It was first synthesized on December 14, 1967.

Answer 5

The first DNA model was formed in 1935, by James Watson and Francis Crick.