Chromosome refers to the structure of protein, DNA and RNA found in cells. These cells have only 23 unpaired chromosomes. When an egg and sperm cell combines they form a fertilized egg with 46 chromosomes. But an egg or sperm cell may divide incorrectly if something goes wrong before fertilization, resulting in an egg or sperm cell with too many or too few chromosomes. When this cell with the wrong number of chromosomes joins with a normal egg or sperm cell, the resulting embryo has a chromosomal abnormality. Trisomy is a common type of chromosomal abnormality. An example of a trisomy is Down syndrome. Articles on Chromosome type are published free of cost and readers have to pay in order to read these articles. The journal believes in quality of articles published rather than quantity. The journal publishes quality articles in open access which increases visibility and readership and spreads knowledge among a wider population.