A daughter cell is "identical" to its mother cell if it contains the same genetic information.
This means that during processes like mitosis, the genetic material (DNA) is replicated and distributed evenly between the two daughter cells, resulting in each daughter cell having the same genetic makeup as the original (mother) cell. While there may be variations in the composition of organelles due to the distribution process and cell function, the key aspect of "identical" in this context refers primarily to the genetic information.