Chromosomes Alignment
in a Dividing Cell

Mitosis (the process of chromosomes alignment in a dividing cell) has been studied for over half a century now but exactly how it worked has been a mystery. Now researchers at Cheeseman’s lab have solved the mystery. They found that it is done by way of protein microtubules that come from two spindle poles on opposite sides of the cell that laterally latch onto and separate the copied chromosomes.

These spindles are attached to astral microtubules that are attaché to the cell membrane. These astral microtubules move the spindles back and forth to align the spindles and chromosomes down the center of the cell. The microtubules coming from the spindles then pull the copied chromosomes apart and such that each of the daughter cells gets a copy. This process is extremely precise in manipulating chromosomes, which it has to be for each daughter cell gets a copy of each chromosome. The failure of this process would likely kill the cells.

This is just further evidence of high degree of organized complexity found in a living cell. The process and actions involved with these microtubules is so precise that it has to be a well controlled process to work so well. This provides yet another reason why abiogenesis is thermodynamically impossible.



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