Question

geographical isolation is not a major factor for speciation in spirogyra which reproduces by fragmentation. give reason

Answer 1

Geographical isolation prevents gene flow between populations of a species that reproduce sexually. Spirogyra reproduces asexually by fragmentation and involves only one individual. In an asexually reproducing organism, variations can occur only when the copying of DNA is not accurate. Therefore, geographical isolation result in the formation of new species in an asexually reproducing organism like spirogyra.