I'm conducting a WGCNA analysis on RNA-seq data (total of 24072 genes after gsg). I've obtained a dendrogram that clearly shows two prominent modules, turquoise and blue, containing a majority of the genes. However, brown & yellow modules, which have around 1963 and 1863 genes respectively (similar to the blue module), is barely visible. The WGCNA Parameters are (power=7, networktype= signed, minimum module size=100, merge cut height = 0.25. (note: the module 0 (i.e grey module ) has around 7925 gene out of 24,072 genes).