What is your question? Can you post it please?
Answer:
Option A. they less severely affect the phenotype, so that individuals can reproduce and transmit them
Explanation:
Polymorphism is the genetic variation found within a population, which favors the process of natural selection. It prefer successful traits in population.
While, mutation is the alteration of DNA sequence of an organism. Mutation can cause loss of traits in the population.
Yₒᵤᵣ ₐₙₛWₑᵣ ᵢₛ .:
_____________________________
Back bone (or vertebral column) is the character of all the species included in .:
Sub-phylum VERTEBRATA
_______of______________
Division CRANIATA
_______of____________
Kingdom ANIMALIA