Blute Blog

Blute's blog about evolutionary theory: biological, sociocultural and gene-culture.

New Definition of Evolution by Natural Selection

leave a comment »

The third thing (beyond density-dependence and mating markets) that I have expanded on since I wrote the book on Darwinian Sociocultural Evolution a decade ago is the proposed new definition of evolution by natural selection.

The definition there was:
“Microevolution by natural selection is any change in the inductive control of development (whether morphological, physiological or behavioural) by ecology and/or in the construction of the latter by the former which alters the relative frequencies of (genetic or other) hereditary elements in a population beyond those expected of randomly chosen variants.” In my haste to include the ecologically inductive and developmentally constructive pathways, I omitted the traditional hereditary (e.g. genetic mutation or recombination route)! In Blute (2017) I explained how all of these are possible but did not include a definition. So in Blute (2019) I offered a new, new definition, most concisely:

“microevolution by natural selection is any change initiated by inheritance, ecology, or development that alters the relative frequency of (genetic or other) hereditary elements in a population beyond those expected or randomly chose variants.”

Blute, Marion. 2017. “Three Modes of Evolution by Natural Selection and Drift: A New or Extended Evolutionary Synthesis.” Biological Theory 12(2): 67-71.
Blute, Marion. 2019. “A New, New Definition of Evolution by Natural Selection.” Biological Theory 14(4): 280-81.

Written by Marion Blute

June 2, 2020 at 2:28 pm

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: