Question

why is variation benifitial to the species but not necessary for an individual ? Explain with an example

Answer 1

the variation adapted during life time is benifisial while genetic variation is harmfull for leving organism

Answer 2

Variations are beneficial to the species than individual because sometimes for a species, the environmental conditions change so drastically that their survival becomes difficult. For example, if the temperature of water increases suddenly, then most of the bacteria living in that water would die. Only few variants that are resistant to heat would be able to survive. However, if these variants were not there, then the entire species of bacteria would have been destroyed. Thus, these variants help in the survival of the species. However, all variations are not necessarily beneficial for the individual organisms...hope it helps...