Final answer:
A segment of DNA between genes that is removed because it does not code for proteins is an intron. Introns are noncoding DNA segments within genes and are excised during RNA splicing by the spliceosome to form mature mRNA that codes for proteins.
Step-by-step explanation:
The segment of DNA that is located between genes but is later removed because it does not code for proteins is known as an intron. Introns are part of the noncoding DNA found within genes, interspersed among exons, or the coding regions that do translate into protein sequences. During the process of RNA processing, introns are transcribed into pre-mRNA along with exons, but they are subsequently removed during splicing. This splicing process is crucial for correct gene expression, as it combines the exons to form a mature mRNA sequence that will code for the functional protein. Introns may vary in size and number across different genes and are generally longer than exons in a given gene. The splicing is performed by a complex called the spliceosome within the nucleus.