AP BIOLOGY

Detailed explanation-1: -Telomeres, the repeated DNA sequences at the ends of linear chromosomes, are unable to be fully replicated by DNA polymerases. Telomeres consist of the six-base repeating sequence TTAGGG. With each cell division, some of the telomeres are lost. But the number of times that most dividing cells can divide is limited.

Detailed explanation-2: -Telomeres are repetitive DNA sequences that are wrapped in specific protein complexes and located at the ends of linear chromosomes. Telomeres distinguish natural chromosome ends from DNA double-stranded breaks and thus promote genome stability.

Detailed explanation-3: -Repetitive regions at the very ends of chromosomes are called telomeres, and they’re found in a wide range of eukaryotic species, from human beings to unicellular protists. Telomeres act as caps that protect the internal regions of the chromosomes, and they’re worn down a small amount in each round of DNA replication.

Detailed explanation-4: -Telomeres are repetitive DNA sequences found at the end of linear chromosomes. In mammals these are made up of tandem repeats of the nucleotide sequence TTAGGG and are bound to the protein complex shelterin. Some human cells contain as many as 1, 500 to 2, 000 repeats of this sequence at the ends of each chromosome.

Detailed explanation-5: -The ends of eukaryotic chromosomes contain repetitive DNA sequences called telomeres, which help to ensure that no information is lost from chromosome ends during DNA replication.