Which is an advantage to an organism having multiple copies of alleles or genes?
a. Mutations are overridden and no longer affect the organism.
b. Paralogous genes can undergo genetic alterations, preventing homozygous genotypes.
c. Unfavorable mutations are overridden, but favorable mutations may still be introduced to the genome.
d. Enough normal alleles are present in a population to prevent harmful alleles from appearing in most genomes.
(I believe it is either c or d, but still not sure)