CURRENT AFFAIRS

Detailed explanation-1: -Chinese scientists claimed to have created the first single-chromosome yeast while not affecting the majority of its functions, a breakthrough that could help in furthering research related to aging and diseases in humans.

Detailed explanation-2: -Using the CRISPR/Cas9 gene editing system, scientists in China have created single-chromosome yeast to study the evolutionary benefits or drawbacks of having multiple chromosomes.

Detailed explanation-3: -… Yeast artificial chromosome (YAC) is a human-engineered DNA molecule used to clone DNA sequences in yeast cells. YACs are often used in connection with the mapping and sequencing of genomes. Segments of an organism’s DNA, up to one million base pairs in length, can be inserted into YACs.

Detailed explanation-4: -Genetics 101 Single-celled brewer’s yeast-whose genome, at 12 million DNA letters long, is hundreds of times shorter than that of humans-boasts 16 chromosomes.

Detailed explanation-5: -The yeast artificial chromosome (YAC) cloning system makes it possible to clone large pieces of genomic DNA into yeast. Libraries have been made containing clones with inserts in the megabase-pair range.