Question

why can multiple alleles provide so many phenotypes for a given trait​

Answer 1

Answer:

Pleiotropy. Many genes have multiple phenotypic effects, a property called pleiotropy. Thus, a new mutation in the gene will affect all the phenotypes/traits associated with the gene simultaneously.

☺️☺️

Answer 2

Answer:

Pleiotropy. Many genes have multiple phenotypic effects, a property called pleiotropy. Thus, a new mutation in the gene will affect all the phenotypes/traits associated with the gene simultaneously.