In which of the following does mitosis not occur?

Which of the following statements is correct?

$S -$ Statement: Cells cannot maintain their efficient size through mitosis.
$R -$ Reason: Meiosis is an important process for evolution.

Identify the incorrect statements:
$(1)$ Meiosis involves only a single cycle of $DNA$ replication.
$(2)$ At the end of Meiosis-$I$,four haploid cells are formed.
$(3)$ Mitosis is generally restricted to diploid cells.
$(4)$ In yeast,the cell cycle takes approximately $90$ minutes to complete.

What is the number of chromatids in a chromosome during metaphase?

Which of the following types of cell division is a characteristic feature of chondrocytes,the macronucleus of Paramecium,and embryonic membranes?