The phrase "approximately two generations of" is correct and usable in written English.
It can be used when discussing time spans, particularly in contexts related to family, history, or societal changes.
Example: "The cultural shifts we observe today can be traced back to approximately two generations of evolving values and beliefs."
Alternatives: "roughly two generations of" or "about two generations of".
This high coefficient, observed despite the single cell bottleneck and the approximately seven generations of growth in liquid medium between the two measurements, is indicative of a heritable, genetic basis for colony size.
The apparent lack of a genetic effect of approximately five generations of hatchery propagation on egg-to-adult fitness in the locally derived hatchery population did not include an assessment of breeding performance.
This procedure is repeated for approximately six generations to obtain the fully backcrossed mouse line.
Approximately two generations after the beginning of feminism, young adults, especially young women, get to assess its outcomes while taking for granted its successes.
In stable target populations reared on artificial diet and an initial OX4319L over-flooding ratio of approximately 10 1, reduced numbers of females and suppression of the populations' reproductive capacity became evident approximately two generations after OX4319L male releases were initiated and these populations fell rapidly to extinction thereafter (after approximately three generations).
There are roughly four generations of students.
At the time of sampling in 2006, the selective breeding strain had been separated from the wild for approximately five generations, assuming a generation time of 5 years for Atlantic salmon.
Given that there are approximately four generations a year, dividing the number of generations by four, estimates the number of cotton growing seasons that the model predicts the Helicoverpa species will remain largely susceptible to Cry2Ab toxin.
Posterior parameter fits indicate that progeny of a single cellular infection are approximately five generations away from the initial, infecting genomes.
In this experimental protocol this equates to approximately three generations.
