Biology Reference
In-Depth Information
FIGURE 2.1
Measurement schemes for the lower jaw of a squirrel. (A) Mental foramen; (B) landmarks on
photograph; (C) landmarks without the photograph; (D) landmarks plus semilandmarks.
FIGURE 2.2
Two semilandmark measurement
schemes. The choice between them is essentially arbi-
trary because no anatomical features specify the location
of points along the curve.
traits retained their identity and biological meaning. Interpreting the results of a multivari-
ate analysis often involved relating the multivariate results to the correlations between
traits. As a result, one of the most important considerations that directed the section of
measurements was the biological meaning of that trait in the context of a given study. But
