In Dominant gene action "dominance" applies to:

Correct option is C

What is Dominance in Genetics?
Dominance is a concept that refers to how one allele at a specific gene locus can mask or override the expression of another allele at the same locus.
This is observed in heterozygous individuals where two different alleles are present.
�� Types of Dominance:
Complete Dominance – One allele completely masks the other (e.g., Tall (T) is dominant over dwarf (t) in pea plants).
Incomplete Dominance – The heterozygote shows an intermediate phenotype.
Codominance – Both alleles express themselves equally (e.g., AB blood group).
�� Clarifying Key Terms:
Gene locus – A fixed position on a chromosome where a particular gene or genetic marker is located.
Alleles – Different forms of the same gene found at the same locus.
�� Evaluating the Options:
(a) Relationship of genes at the same locus – ❌ Misleading. "Genes" typically refer to larger functional units; dominance is between alleles, not genes as a whole.
(b) Relationship of genes at different loci – ❌ Refers to epistasis, not dominance.
(c) Relationship of alleles at the same locus – ✅ Correct definition of dominance.
(d) Relationship of alleles at different loci – ❌ Again, relates to epistatic interactions, not dominance.