On this day in science history: 3 June

From the days of ancient technology to modern science - find out what happened on this day in the history of science.

3rd June 2017
Reconstruction of Triceratops (Triceratops horridus), Late Cretaceous Period © De Agostini Picture Library/Getty Images

Reconstruction of Triceratops (Triceratops horridus), Late Cretaceous Period © De Agostini Picture Library/Getty Images

1972 – First artificial gene synthesised

Har Gobind Khorana © Apic/Getty Images
Har Gobind Khorana © Apic/Getty Images

Har Gobind Khorana announces his team have created the first fully artificial gene in a living cell.

The gene was a yeast tRNA (transfer ribonucleic acid) coding for the amino acid tyrosine. tRNA genes are the smallest genes, typically around 80 nucleotides long. Nucleotides are the building blocks of nucleic acids, which Khorana and his colleagues joined together to create the gene.

2013 – Excavation of most complete triceratops skeleton ever found

Naturalis Biodiversity Center/YouTube

Palaeontologists uncover three triceratops fossils in Wyoming, including the most complete skeleton ever found.

It is thought that the dinosaurs were a family unit, the occurrence of which had never before been documented. Some of the bones appeared to have been bitten through, and with Tyrannosaurus rex bones also found in the area, the family could have been victims of the predator. As herbivores, triceratops were quite often preyed upon by carnivorous dinosaurs, meaning complete skeletons are very rare.

Watch: Doctor Who escapes on a triceratops

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