1

A molecular structure

in the

space of genotypes

2

A molecular function

in the

space of molecular structures

3

A computable emergent property^{2}

in the

space of molecular functions

4

A computable fitness correlate

in the

space of computable emergent properties

5

An observable fitness correlate^{3}

in the

space of computable fitness correlates

6

The fitness of an individual

in the

space of observable fitness correlates

7

The mean fitness of a population

in the

space of the fitness values of all individuals in the population^{4}
