Question

Genes present on same locus having different experiences are called

Answer 1

I think Mole is the answer for your question

Answer 2

Genes present on same locus having a different expression are called Alleles.

Let's check an example to understand this, in Mendel's experiment with pea, each traits has two expressions, for example

- pea shape (wrinkled o round)

-Pea color (yellow or green)

These two expression of one trait is due to the alleles. They are present at a same place on a homologous chromosome.