Equation 1 · Part 2 · One Gene, Forty Eyes: What Evo-Devo Did to the Convergence Story
Symbol i
What this part means
i is part of the quantity the equation computes from the expression on the right.
Its job in the formula
i is part of the quantity the equation computes from the expression on the right.
Full expression→Symbol i→Article meaning
The passage around this formula
To convert steps into generations, Nilsson and Pelger applied the standard quantitative-genetics equation for the response to selection on a continuous trait, deliberately choosing pessimistic values for every free parameter: a heritability of 0.50, a selection intensity of 0.01, and a coefficient of phenotypic variation of 0.01, values the authors describe as common or deliberately conservative rather than favourable to a fast result [ 4 ] . Those choices give a fractional improvement of only 0.005 percent of the trait mean per generation. Compounding that per-generation rate to reach the full 1,829 steps of one-percent change — equivalent to a single structure lengthening by a factor of…
Learn the underlying idea
A variable is a named place for a value. Its letter is a local label: x can mean position in one formula and a data point in another.
Open the illustrated variables: a letter stands for a value guide →
See this notation across published equations →
Sources cited in the surrounding passage
These citations provide research context; check each source for the exact claim it supports.