Which cause of evolution involves new alleles entering a gene pool

Mutation

Explanation:

Mutation creates new genetic variation in a gene pool. It is how all new alleles first arise.

the correct answer should be false

{apex}

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.