Genetic variations are the raw material for evolution. natural selection cannot act upon these variations unless which factor is
present? a.the genetic variations produce only unfavorable characteristics
b.the genetic variations produce only favorable characteristics
c.the genetic variations are found in fossil records of the population
d.the genetic variations are in the phenotype of the organism
I believe it is D. the genetic variations are in the phenotype of the organism. The reason why I say this is because the phenotype is the physically noticeable characteristics in an organism, this allows them to mutate differently and only the ones who are fit enough and have the best phenotypes will survive.
