Answer:
The correct answer is option B, alleles on homologous chromosome determine traits
Step-by-step explanation:
In a homologous chromosome, the alleles of any trait occupies same position and thus when alleles occupying the same position combine with each other they lead to expression of the trait. In a heterozygous chromosome, the alleles of the same trait occupies different position and thus they are not expressed effectively. In the mechanism of inheritance genes are responsible for expressing any character, therefore allele lying in the homozygous chromosome of genes pair up to express of any characteristics.