Fill in the Numbered Blanks Below Using Single Words

Essay

Fill in the numbered blanks below using single words.
____1_____ is the usual form of cell division and occurs after a previous round of chromosome (and DNA) ____2_____. The point of this type of cell division is to allow an increase in cell ___3____. As might be expected, ____1____ is particularly prevalent during periods of growth, but even in a fully grown adult there is a need for cell divisions in order to replace certain cells that have ___4____ lifespans, such as ___5____ cells and some types of epithelial cells, notably those in the _____6_____ tract.