DNA segments at the ends of chromosomes that shorten every time a cell divides are called

A) transposons.
B) mutagens.
C) activated chromatin.
D) operons.
E) telomeres.

Telomeres

Telomeres are the protective caps at the ends of chromosomes, which prevent the loss of genetic information during cell division and play a key role in cellular aging and cancer.

Transposons

DNA sequences that can change positions within the genome.

Mutagens

Agents, such as chemicals or radiation, that cause mutations or changes in the DNA of organisms.