State the role of centrioles other than spindle formation.

It is observed that heart cells do not exhibit cell division. Such cells do not divide further and exit ___________ phase to enter an inactive stage called ___________ of cell cycle. Fill in the blanks.

In which phase of meiosis are the following formed? Choose the answers from hint points given below.

a. Synaptonemal complex ____________________________

b. Recombination nodules ____________________________

c. Appearance/activation of ____________________________

enzyme recombinase

d. Termination of chiasmata _ ___________________________

e. Interkinesis ____________________________

f. Formation of dyad of cells _ ___________________________

Hints : 1) Zygotene, 2) Pachytene, 3) Pachytene, 4) Diakinesis, 5) After Telophase-I /before Meosis-II, 6) Telophase-I /After Meiosis-I.

Mitochondria and plastids have their own DNA (genetic material). What is known about their fate during nuclear division like mitosis?

Label the diagram and also determine the stage at which this structure is visible.