Final answer:
The mutation described where chromosome segments swap places between two nonhomologous chromosomes is known as a translocation, which can have significant effects on the organism.
Step-by-step explanation:
When a small portion from the end of chromosome 2 is found on the end of chromosome 15, replacing the end of chromosome 15, which has moved to the end of chromosome 2, this mutation is called a translocation. Translocation is when a segment of DNA from one chromosome breaks off and attaches to a different chromosome. This can happen between nonhomologous chromosomes, meaning the chromosomes are not matching pairs in the genome. Such chromosomal mutations can have significant effects depending on the genes involved and are sometimes implicated in certain types of cancer, such as chronic myelogenous leukemia.