What are alternative forms of genes called? (A) Alleles (B) Autosomes (C) Chromatids (D) Chromosomes - HSC - SSCE Biology - Question 2 - 2015 - Paper 1

Alternative forms of genes are referred to as alleles. Alleles are different versions of a gene that may produce distinguishable phenotypic traits. For example, a gene that determines flower color may have a red allele and a white allele, contributing to the variety seen in a species.