The answer is B->E->A->C->D
Polyallelism.
Poly means many. So, when there are more than two alleles for the same gene locus we call it of polyallelism. This makes genetic variability much bigger because there are several alleles for a possible location in a chromosome and this would make, for example, from two parents a possible combination of two out of four possible alleles if between them they had all different alleles.
ecosystems are at the same latitude are placed in the same biome is false
It causes a much more gradual decrease in hardness with position from the quenched end.The presence of alloying elements (other than carbon) does not influence on the shape of a hardenability curve.It causes a much more rapid decrease in hardness with position from the quenched end.