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The CRISPR genetic locus provides bacteria with a defense mechanism to protect them from repeated phage infections. Transcripts of the CRISPR Genetic Locus and Maturation of pre-crRNA 3D structure of the CRISPR-Cas9 interference complex CRISPR-Cas9 as a molecular tool introduces targeted double strand DNA breaks.
A focus on new model organisms such as viruses and bacteria, along with the discovery of the double helical structure of DNA in 1953, marked the transition to the era of molecular genetics. In the following years, chemists developed techniques for sequencing both nucleic acids and proteins, while many others worked out the relationship between ...
Hershey–Chase experiment proves that phage genetic material is DNA. 1952: The Hershey–Chase experiment proves the genetic information of phages (and, by implication, all other organisms) to be DNA. [29] 1952: an X-ray diffraction image of DNA was taken by Raymond Gosling in May 1952, a student supervised by Rosalind Franklin. [30]
It has been nearly 50 years since a new genus has been discovered in a national park, ... furry relative was confirmed to have genetic similarities after some DNA sequencing. "O. biradiata is a ...
Hershey and Chase and subsequent discoveries all served to prove that DNA is the hereditary material. Hershey shared the 1969 Nobel Prize in Physiology or Medicine with Max Delbrück and Salvador Luria for their "discoveries concerning the genetic structure of viruses". [3]
Recombination allows chromosomes to exchange genetic information and produces new combinations of genes, which increases the efficiency of natural selection and can be important in the rapid evolution of new proteins. [140] Genetic recombination can also be involved in DNA repair, particularly in the cell's response to double-strand breaks. [141]
Experts have long known there is a genetic component to obesity, and a new study identified one particular gene that may be behind it. Experts have long known there is a genetic component to ...
A new method to deliver drugs into the inner ear is demonstrated with a gene-therapy against hearing loss in mice. [350] Researchers demonstrate encoding and storing data – small images – as DNA without new DNA synthesis by recording light exposure into bacterial DNA via optogenetic circuits. The 'biological camera' extends chemical and ...
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