Final answer:
No, each end of a single chromosome does not have the same length. Telomeres, which consist of repetitive sequences, protect the ends of chromosomes from getting deleted. Telomerase is an enzyme that helps in maintaining chromosome ends.
Step-by-step explanation:
No, each end of a single chromosome does not have the same length. The ends of linear chromosomes are known as telomeres, and they consist of repetitive sequences that do not code for a particular gene. In humans, telomeres contain a six base pair sequence, TTAGGG, which is repeated 100 to 1000 times. The discovery of the enzyme telomerase helped in understanding how chromosome ends are maintained.
Telomerase attaches to the end of the chromosome and adds complementary bases to an RNA template on the 3' end of the DNA strand, allowing DNA polymerase to add nucleotides that are complementary to the ends of the chromosomes, replicating the ends.