NEET BIOLOGY

Detailed explanation-1: -Prophase I can be divided into several stages, as follows. Leptotene begins with the already replicated chromosomes becoming visible as thin threads.

Detailed explanation-2: -Leptotene: In this stage, the initiation of chromosome condensation takes place and it attains a composite form. Zygotene: In this, the homologous chromosomes pairs, the process is called chromosomal synapsis. It is followed by the generation of a composite composition called the synaptonemal complex.

Detailed explanation-3: -Prophase I of meiosis I is a process that involves five different stages during which genetic material in the form of alleles crosses over and recombines to form non-identical haploid chromatids. Prophase I is the first stage of meiosis I, followed by prophase II, anaphase I, anaphase II, metaphase I and metaphase II.

Detailed explanation-4: -Prophase 1 of meiosis is essentially the crossing over and recombination of genetic material between non sister chromatids which results in the genetically identical, haploid daughter chromatid cells.

Detailed explanation-5: -Synapsis takes place during the zygotene stage of prophase I of meiosis.