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28. Which of the following statements concerning alleles is true for diploid organisms?
1. At most only two alleles occur at a given locus in a organisms genome.
2. Alleles occupy an identical locus in homologous chromosomes.
3. Alleles of a given gene usually occur on non-homologous chromosomes.
4. A single chromosome usually carries two alleles of each gene.
1. At most only two alleles occur at a given locus in a organisms genome.
2. Alleles occupy an identical locus in homologous chromosomes.
3. Alleles of a given gene usually occur on non-homologous chromosomes.
4. A single chromosome usually carries two alleles of each gene.