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1987: Yoshizumi Ishino discovers and describes part of a DNA sequence which later will be called CRISPR. 1989: Thomas Cech discovered that RNA can catalyze chemical reactions, [ 60 ] making for one of the most important breakthroughs in molecular genetics, because it elucidates the true function of poorly understood segments of DNA .
1972 – The DNA composition of chimpanzees and gorillas is discovered to be 99% similar to that of humans. 1973 – Stanley Norman Cohen and Herbert Boyer perform the first successful recombinant DNA experiment, using bacterial genes. [6] 1974 – Scientists invent the first biocement for industrial applications.
Using these x-rays and information already known about the chemistry of DNA, James D. Watson and Francis Crick demonstrated the molecular structure of DNA in 1953. [22] [23] Together, these discoveries established the central dogma of molecular biology, which states that proteins are translated from RNA which is transcribed by
1940 – Donald Griffin and Robert Galambos announced their discovery of echolocation by bats. 1942 – Max Delbrück and Salvador Luria demonstrated that bacterial resistance to virus infection is caused by random mutation and not adaptive change. 1944 – Oswald Avery shows that DNA carried the hereditary information in pneumococcus bacteria.
In 1953, James Watson and Francis Crick discovered the double helical structure of the DNA molecule based on the discoveries made by Rosalind Franklin. [5] In 1961, François Jacob and Jacques Monod demonstrated that the products of certain genes regulated the expression of other genes by acting upon specific sites at the edge of those genes.
Now, scientists have used ancient DNA collected from the casts that have been made to better understand the Pompeii residents and their origins. What they found alters history that’s been ...
DNA studies suggested that the dog most likely arose from a common ancestor with the grey wolf. [2] Genetic engineering is the direct manipulation of an organism's genome using certain biotechnology techniques that have only existed since the 1970s. [3]
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