FIG. 5.

Hierarchical cluster analysis of mRNA expression data from gonads of 13-mo-old Lake Woodruff and Lake Apopka alligators incubated at 32°C using Ward linkage clustering. The gray-scale, colorimetric gradient matrix displays lower expressions in lighter colors and higher expressions in darker colors. Dendrograms show distance scales for individual animals in the horizontal and mRNA expressions in the vertical. Sex and lake of origin of individual animals are noted to the left of the matrix. Horizontal lines separate numbered clusters. Vertical lines separate groups of similar gene expressions.