Abstract: In Arabidopsis (Flowering Plant) shoot apical meristem (SAM) is converted into inflorescence meristem. Study has been revealed that there are various genes which control this transition. Two types of inflorescence are found in flowering plants: Determinate and indeterminate. Terminal Flower 1 (TFL1) gene is one of those genes which play key role for the maintenance of inflorescence meristem. Tfl1 gene regulates flowering time and maintains the fate of inflorescence meristem. Arabidopsis genome contains six TFL1 like genes. TFL1 belongs to a small gene family. In this study a comparison between TFL1 wild type and TFl1 mutant is conducted according to which TFL1 is able to convert the indeterminate inflorescence to determinate. TFL1 is believed to be a controller or more specifically a regulator of inflorescence architecture and flowering time. TFL1 is believed to be a negative regulator of flowering time so if mutations are introduces in it the flowering time will be accelerated.