ABSTRACT
The science of genetics relates to heredity and variation/continuity of life. Cell division, mitosis and meiosis, and precise DNA replication predicts the inheritance of a particular trait from parents to the progenies. A clear understanding of the mode of inheritance is revealed by the science of genetics and its foundation was laid by J. G. Mendel in 1865, based on experiments on the garden pea. Johann Gregor Mendel used discontinuous traits while at that time scientists were looking for continuous variation. Mendel's approach with probability events and mathematical ratios was an unfamiliar idea to biology. The monohybrid hybridization led Mendel to discover the principle of segregation. Mendel proposed the law of independent assortment by mating two parents differing in two pair of genes. Mendel hybridized plants with yellow-round and green-wrinkled seeded plants. Mendel's laws of segregation and independent assortment precisely corrects in case gene action expresses complete dominance and lack of interference between different genes does not occur.
