What type of mutation occurs when a cell fails
to divide after mitosis?

If it is a gene mutation then it is during the S phase, and if it is a chromosome mutation, then during metaphase or anaphase.

Explanation:

If there is no mitosis there would be no cell growth and ce!l reproduction most of the importantly genetic information cannot be passed on and then therefore all the cell functions would be hugely affected.

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the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.