the present invention provides methods for extracting similar expression patterns and related biopolymers considering natures that are characteristic of expression data of , for example , genes . a segment of experiment cases which includes an expression of interest is selected as a search range among an expression pattern of a reference gene or the like . by comparing the selected segment of the expression pattern with expression patterns of a group of candidate genes or the like , genes having an expression pattern with at least a partial similarity are searched from the group of candidate genes . a partially taken out curve is transferred to overlap an expression pattern curve of a candidate gene to search expression patterns with a similar pattern shape .