Oz Blog News Commentary

the luck and accidental opportunism of nature…..

June 17, 2022 - 10:22 -- Admin


 In 1898, Hermon Bumpus gathered 136 house sparrows immobilized by an ice storm, noting that the averages of several morphological traits differed between survivors and nonsurvivors. This was one of the first attempts to measure the phenotypic selection component of Charles Darwin’s thesis, that adaptation is driven by heritable traits that affect fitness.


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