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After all the trouble, due to turbulence, the real star may not even reveal the true quality of your telescopes or give you perfect collimation. An artificial star will provide you with an excellent alternative means to do the star test anytime and anywhere you want, without all the drawbacks of real stars.
artificial chromosome A type of cloning vector that has some features of true chromosomes and is used to clone relatively large fragments of DNA.Bacterial artificial chromosomes (BACs) are based on the F (fertility) plasmid found naturally in E. coli bacteria (see sex factor).hromosomes, Artificial. Artificial chromosomes are laboratory constructs that contain DNA sequences and that perform the critical functions of natural chromosomes. They are used to introduce and control new DNA in a cell, to study how chromosomes function, and to map genes in genomes.