FIGURE 1.

The flowchart describes clinal variation and the impact of climate change on clines. Clinal variation can occur both at the phenotypic and genotypic level across different geographic scales; altitude and latitude. Climate changes are known to influence existing clines, resulting in clinal shifts in which species either expand or contract in their habitat range. Response to climate change could be rapid and these could be tracked within a span of few years. Populations responding to climate change at the genomic level could modify existing ones. Overall clines could be a tool to track rapid environmental changes.