What is the specific base sequence found in human telomeres, and how does the base sequence contained in the telomeric regions of chromosomes differ from that found elsewhere in the chromosome?  (Please indicate both the base sequence and the 5’/3’ polarity.)

What is a complex of proteins that folds up the telomeres into a structure that shields single-stranded TTAGGG sequences from nucleases and NHEJ enzymes?

A previously undiscovered single celled organism was found living at a great depth on the ocean floor. Its nucleus contains only a single, linear chromosome consisting of  7x10^6 nucleotide pairs of DNA coalesced with three types of histone-like proteins. The analysis of individual nucleosomes revealed that each unit contained one copy of each protein and that the short linker DNA had no protein bound to it If the entire chromosome consists of nucleosomes (discounting any linker DNA), how many are there and how many total proteins are needed to form them?

What type of chromosomal rearrangement occurs If a single chromosome suffers two double-strand breaks followed by DNA repair that fuses the remaining broken ends (nonhomologous end-joining) if the intervening fragment rotates by 180°?