Cytogenetics is a branch of genetics that is concerned with the study of
the structure and function of the cell, especially the chromosomes. It
includes routine analysis of G-Banded chromosomes, other cytogenetic
banding techniques, as well as molecular cytogenetics such as
fluorescent in situ hybridization (FISH) and comparative genomic
hybridization (CGH). The world has witnessed extraordinary advances in
science over the last few decades. Biotechnology one such area of growth
is a term covering a broad range of scientific activities used in many
sectors, such as food, health and agriculture. It involves the use of
living organisms or parts of living organisms to provide new methods of
production and the making of new products. Cytogenetics is also defined
as the study of chromosomes and how changes in their structure and
number can relate to disease. Cytogenetic tests are often used in the
diagnosis of genetic diseases and in prenatal diagnosis. The two major
techniques used in cytogenetics are karyotyping and fluorescent in situ
hybridization (FISH).