In a diploid organism has two copies of the same gene that may or may not encode the same version of that characteristic. An alternate form of the gene variant which is situated at the same relative locus on homologous chromosomes is called alleles. In the given question gene for temperature regulation, gene for production of nails and gene for production of fur are located at the same relative loci on the homologous chromosomes.
gene for temperature regulation, gene for production of nails, gene for production of fur. these should be the answer because the chart shows them as having the same size and color alleles, which should make them homozygous and dominant.
