DNA segments called _____ are at the ends of chromosomes and eventually signal the cell to enter apoptosis.
A) transposons
B) mutagens
C) activated chromatin
D) operons
E) telomeres

Question

Quizplus · Accepted Answer

Most normal cells have a built-in limit to the number of times they can divide before they die. One of the reasons normal cells stop entering the cell cycle is that the telomeres become shortened. Telomeres are sequences at the ends of the chromosomes that protect the genetic information by allowing cells to go through repeated divisions without loss of genes. With each cell division, the telomeres shorten, eventually becoming short enough to signal apoptosis.Bloom's

DNA Segments Called _____ Are at the Ends of Chromosomes