Chromosome
Duplication - The presence of an additional chromosome segment when compared to normal chromosome is attributed to the process of duplication. Duplications were first discovered by Sturtevant and Plunkelt in 1926. Duplication means that an extra segment of gene from another or same chromosome attaches to a chromosome.
In a diploid organism, if the presence of a chromosome segment in more than two copies per nucleus it is called duplication. Duplications are very important changes from evolution point of view.
Duplication provides additional genetic material potentially capable of giving rise to new genes during the process of evolution. Based upon orientation and location of the new segment, duplication is further classified into four types.
