phyletics
/fʌɪˈlɛtɪks/Biology
noun
The study of the relationships between biological species or other groups of organisms as resulting from evolutionary change and divergence; specifically an approach to systematics which aims to classify organisms on the basis of evolutionary relationships (contrasted with phenetics), but does not apply the strict principles of cladistics.
Origin
1930s; earliest use found in American Midland Naturalist. From phyletic: see -ic.