Question

Telomeres:

A. contain repeated nucleotide sequences that are required for the ends of chromosomes.
B. allow duplicated chromosomes to become attached separated during M phase.
C. cap the ends of the DNA molecule and prevent them from being recognized by the cell as broken DNA in need of repair.

Answer 1

Telomeres are repetitive nucleotide sequences at the ends of chromosomes that protect genetic information during cell division. They are extended by the enzyme telomerase to prevent the loss of important DNA sequences.

Step-by-step explanation:

Telomeres and Their Functions

The subject of telomeres concerns their critical role in protecting chromosome integrity during cell division. Telomeres contain repetitive nucleotide sequences that do not code for particular genes. Instead, they serve a protective function, ensuring that genetic information is not lost during the process of DNA replication. In humans, the sequence TTAGGG is repeated from 100 to 1000 times at the ends of chromosomes. When cells divide, telomerase, an enzyme with a built-in RNA template, extends the 3' end of the lagging strand, allowing DNA polymerase to complete the synthesis of the telomere, thus preserving the genetic material.

Contrary to other options, telomeres do not facilitate the attachment of chromosomes during the M phase of cell division. Instead, their main role is to cap the ends of DNA molecules and protect them from being perceived as broken DNA needing repair.