Final answer:
Genes are sequences of bases in DNA that encode genetic information. Most genes code for proteins and each gene has a specific location on a chromosome. A single chromosome contains many genes and the correct answer that describes characteristics of genes is (b) (i) and (iii).
Step-by-step explanation:
The question regards the characteristics of genes, and to answer it correctly, we must evaluate the provided statements.
Statement (i): Genes are specific sequence of bases in a DNA molecule. This is true, as genes consist of specific sequences of the four nucleotides (cytosine, thymine, adenine, and guanine) which encode the genetic information.
Statement (ii): A gene does not code for proteins. This is generally false. Most genes contain instructions to create polypeptides, which are the building blocks of proteins.
Statement (iii): In individuals of a given species, a specific gene is located on a particular chromosome. This is true. Each gene has a specific location, or locus, on a chromosome.
Statement (iv): Each chromosome has only one gene. This is false. A single chromosome can have hundreds or even thousands of genes.
Based on this analysis, the correct answer that describes characteristics of genes is (b) (i) and (iii).