dN

But scant is robust evidence at early developmental stages for a lower dN/dS ratio.

2008 December - Telic Thoughts 2008

The ratio of non-synonymous to synonymous substitutions (dN/dS) in protein coding genes, has been used to measure selective pressure.

2008 December - Telic Thoughts 2008

In population ecology, the population growth rate (dN/dt, units - individuals/time) is the product of the population size (N, units - individuals) and the per capita growth rate (r, units - individuals/time individual).

Population growth rate 2009

In the exponential model, change in population size (dN) over a specified, and usually short, interval of time (dt) is proportional to the product of the per capita growth rate r (where r is the number of individuals added to or subtracted from the population per individual already present in the population per time) and the population size N (where N is the number of individuals present in the population).

Exponential growth 2008

Mathematically, the exponential model is: dN/dt = rN

Exponential growth 2008

Under those conditions (K – N)/K approaches one and dN/dt approaches rN.

Competitive exclusion principle 2008

The r in the equation is the intrinsic rate of increase of the population (the rate at which the population can increase when there is plenty of food and other conditions are ideal for its growth). dN/dt is the calculus notation for the change in N (population size or density) with time.

Competitive exclusion principle 2008

One simple version of the logistic model is expressed in the equation dN/dt = rN ((K - N)/K).

Competitive exclusion principle 2008

The other known factors account only for a few percentage of the observed variance in dN.

Archive 2007-05-01 Pedro Beltrao 2007

Highly expressed proteins have optimal codon usage for efficient translation and therefore a lower dN and dS.

Archive 2007-05-01 Pedro Beltrao 2007