PLEASE HELP!! I HAVEN'T A CLUE ON THIS

In cells, the primers for DNA synthesis are short strands of RNA, so each newly-synthesized strand of DNA has a segment of RNA at its 5' end. As replication proceeds, DNA polymerases remove these RNA segments and fill in the resulting gaps with DNA. However, the gaps at the very 5' ends of the new strands cannot be filled in with DNA. Why not? DNA replication leaves exposed about 100 nucleotides at the 5' end of each template strand, and these single-stranded ends are removed. What are the effects of this "end problem" on a cell's DNA as it continues to divide?

All linear chromosomes the newly synthesized strands of DNA are shorter at the 5' prime and then that same region of the parental strands. There is a 3’ overhang at one end of the daughter strand strand;mboth resulting daughter DNA strands 3' overhangs. Without any other cellular process these overhangs are typically digested by nucleases. However this would lead to the shortening of daughters DNAs with each replication of parental DNA.

To combat this chromosomes in eukaryotes contain regions called telomeres. These have repetitive non-coding sequences which function to protect important genes from deletion during cell division and DNA shortening during the process of DNA replication.

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