Question

in certain types of cells, like liver and heart tissues, tetraploid (4n) cells are normal and common. however, sometimes the formation of tetraploid cells may be an unintentional result of exposure to chemicals or other factors. these rogue tetraploid cells may eventually lead to tumor formation. these cells most likely form due to a failure at which phases of the cell cycle? select all that apply.

Explanation:

Tetraploid cells form when a cell has an extra set of chromosomes. Failure in cytokinesis, the process of dividing the cytoplasm to form two daughter - cells, can lead to a single cell with double the normal number of chromosomes (tetraploidy). Also, errors in the S - phase, where DNA replication occurs, can result in abnormal chromosome numbers. If DNA replicates more than once or there are issues with the regulation of replication, tetraploidy can occur.

Answer:

S phase, Cytokinesis