Which statement identifies an application of bioinformatics?

The statement that identifies an application of bioinformatics is mapping an organism's entire genome. Bioinformatics combines biology, computer science, and mathematics to understand and interpret biological data, particularly in genetics and genomics. Mapping a genome involves the use of computational tools and algorithms to analyze DNA sequences, identify genes, and determine their positions on chromosomes. This process is fundamental in fields such as genomics, where it aids in understanding the genetic basis of diseases, traits, and evolutionary biology.

While developing new fertilizers, testing soil for nutrients, and constructing isolated gene sequences involve biological research and applications, they do not primarily utilize bioinformatics methodologies for analysis and interpretation at the level of genome mapping. Bioinformatics specifically focuses on the storage, retrieval, and analysis of biological data, making it essential for tasks like genome mapping.