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.

At what stage of cell cycle does DNA synthesis take place?

It is said that the one cycle of cell division in human cells (eukaryotic cells) takes 24 hours. Which phase of the cycle, do you think occupies the maximum part of cell cycle?

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.

State the role of centrioles other than spindle formation.