RRB Paramedical Staff Nurse Model Paper 2

Gene duplication is an important mechanism for acquiring new genes and creating genetic novelty in organisms. Many new gene functions have evolved through gene duplication and it has contributed tremendously to the evolution of developmental programmers in various organisms. Gene duplication can result from unequal crossing over, retroposition or chromosomal (or genome) duplication.
Shotgun technique is employed in duplicating genomic DNA