Prepare for NEET Biology Cell Cycle and Cell Division with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert help for mitosis and meiosis understanding.
In which stage of meiosis I does terminalization of chiasmata become a prominent characteristic?
Pachytene
Zygotene
Diplotene
Diakinesis
The movement of chiasmata towards the ends of chromosomes, a key event in meiosis, is known as:
Terminalization
Synapsis
Crossing over
Disjunction
During which phase of meiosis I do the chiasmata shift towards the ends of the chromosome arms?
Anaphase I
Metaphase I
Prophase I
Telophase I
Terminalization of chiasmata is most clearly observed during:
Leptotene
Diakinesis
Pachytene
Zygotene
If chiasmata are observed to be moving towards the ends of chromosomes during meiosis, which sub-stage of Prophase I is most likely occurring?
Diakinesis
Diplotene
Pachytene
Zygotene
Certain actively dividing cells temporarily exit the cell cycle and enter a non-dividing state. This state is known as the quiescent stage (). This transition typically occurs at the end of which phase?
S phase
G2 phase
M phase
G1 phase
In the cell cycle, under what conditions might a cell enter the phase?
DNA damage during S phase
Completion of mitosis
Start of DNA replication
Unfavorable environmental conditions or terminal differentiation
Which of the following is characteristic of a cell in the phase?
Actively replicating DNA
Undergoing mitosis
Preparing for DNA replication
Not actively dividing
The quiescent phase () in the cell cycle is best described as:
A period of active DNA replication
A stage of cell division
A preparatory phase for mitosis
A non-dividing state outside the active cell cycle
The synaptonemal complex disassembles during which stage of meiosis?
Leptotene
Zygotene
Pachytene
Diplotene