Identify the odd one out:

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

Identify the correct statements: $(1)$ Synapsis occurs between homologous chromosomes during prophase $I$ of meiosis. $(2)$ Centromeres split during anaphase $I$ of meiosis. $(3)$ Spindle fibers completely disappear during telophase of mitosis. $(4)$ Nucleoli reappear during telophase $I$ of meiosis.

Identify the following figures $(A-D)$ and choose the correct option.

Match the following columns and select the correct option:

Column-$I$	Column-$II$
$(1)$ Attachment of spindle fibers to kinetochores	$(a)$ Prophase
$(2)$ Formation of contractile ring in cytoplasm	$(b)$ Telophase
$(3)$ Decondensation of chromosomes	$(c)$ Cytokinesis
$(4)$ Condensation of chromosomal material	$(d)$ Metaphase

$X$-bodies were discovered by: