Statement I : Linked genes are located on different loci of same chromosome.

Statement II : Multiple alleles of a gene are located on same locus of homologous chromosomes.

Statement I is correct. Linked genes are genes that are located on the same chromosome, specifically on the same arm of the chromosome. These genes tend to be inherited together as a group because they are physically close to each other on the chromosome. The degree of linkage between two genes depends on the physical distance that separates them on the chromosome. Linked genes do not assort independently during meiosis, in contrast to genes on different chromosomes, which assort independently.

Statement II is also correct. Multiple alleles of a gene are different versions or variants of that gene, and they are all located at the same gene locus (specific location) on homologous chromosomes. Homologous chromosomes are pairs of chromosomes that carry the same genes at corresponding loci, although they may have different alleles at those loci. For example, the gene locus for the ABO blood group system on chromosome 9 can have multiple alleles (IA, IB, i) at that same locus on homologous chromosomes. Each allele represents a different version of the ABO gene.