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°?

At what point duplicated chromosomes are joined?

What are the primary and the secondary constrictions of a chromosome? What is the other name given to the secondary constriction?

what is chromosome 9 length?

A person with cancer walks into the classroom.  As a biology class, we ask if we can examine some of the cancerous cells and find that many of these cancerous cells have an extra chromosome 10 (trisomy) leading to more cyclin for forming the MPF being made, leading to uncontrollable cell division (i.e. tumor and progression to cancer).  What would cause extra chromosomes in cells (be it somatic or gametic cells)?   Select one: a. None of these choices are linked to how sister chromatids separate and would lead to extra chromosomes in daughter cells of cell division. b. APC not functioning correctly to add ubiquitin to the cohesins, thus sister chromatids do not split correctly during cell division c. MPF itself would cause more chromosome replication d. APC is overly functioning adding cohesins to the sister chromatids

what is length of chromosome 22 ?

Could you please explain simple terms how does the base sequence contained in the telomeric regions of chromosomes differ from that found elsewhere in the chromosome?

In a turtle species, a diploid cell in the G1 phase of the cell cycle contains 22 picograms of DNA (picogram is a measure of the total mass of the DNA present). How much DNA is present in a cell of the same species at prophase II of meiosis (prophase of the second meiotic division)?

Obvious differences in the position of chromosome copies are clear during metaphase of mitosis and meiosis.  How would you describe these changes?

what is length of chromosome 15 ?