Final answer:
The end replication problem is the challenge of replicating the ends of linear chromosomes. Telomerase solves this problem by adding telomeres to the ends of chromosomes.
Step-by-step explanation:
The end replication problem refers to the challenge of replicating the ends of linear chromosomes. During DNA replication, the enzyme DNA polymerase is unable to fully replicate the lagging strand, leading to the loss of genetic material at the ends of chromosomes. Telomerase is an enzyme that solves this problem by adding repetitive DNA sequences called telomeres to the ends of chromosomes.