Selection in the text Can you tell what the effects are Both

Selection in the text. Can you tell what the effects are? Both stabilizing and disruptive selection have a predictable effect on the range of phenotypes; what are they? Directional selection has a predictable effect on the average of a phenotypes; what are they? Directional selection has a predictable effect on the average of a phenotype. What is it? As a biologist, you discover historical data on body length of a frog species that was collected 100 years ago Generation A\" data). After determining that body length is a trait that is genetically inherited, you decide to replicate the 100-year old study (\"Generation B\" data) and compare results. Use the provided data to calculate the average length and range of lengths in both Generation A and B.

Solution

1. Natural selection leads to many inventions based on the selected organism. Selection bias results due to non randomization of data. Due to sampling bias, the results cannot be generalised to the overall population. Thus, external validity of a test is affected.

Stabilizing selection decreases the genetic variance of a population. Here there is selection of average phenotype.

In disruptive selection, two or more distinct, advantageous phenotypes are selected.

In directional selection, phenotype of a particular trait are selected. As a result, the genetic variance of a population shifts towards a fitter phenotype.