In the context of cell division, which chromosomal behaviour takes place at the leptotene stage?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Chromosomes begin to condense.
In the context of cell division, at the leptotene stage of prophase I in meiosis, chromosomes begin to condense. During this stage, the chromatin starts to thicken and become visible as individual chromosomes. The homologous chromosomes are not yet fully paired or synapsed, which occurs later in the zygotene stage. Leptotene is the first sub-stage of prophase I, where the chromosomes begin their preparation for synapsis and recombination in the subsequent stages of meiosis.