Question

what are the phases of miosis I​

Answer 1

In each of these phases, there is a prophase, a metaphase, and anaphase and a telophase. In meiosis I these are known as prophase I, metaphase I, anaphase I and telophase I, while in meiosis II they are known as prophase II, metaphase II, anaphase II and telophase II

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Answer 2

Phases of Miosis I :-

i. Leptotene

• DNA present as a Web
• DNA starts condensing and coiling
• Thin long thread like chromosomes appears.

ii. Zygotene

Homologous chromosomes start pairing and this process of association is called Synapsis

Each pair of synapses homologous chromosome called a Bivalent or Tetrad.

iii. Pachytene Phase

Crossing over occurs between non sister chromatids of homologous chromosomes .

Crossing over is carried by Recombinase (a enzyme).

iv. Diakinesis

Point of contact that is Chaismata move towards the end of sister chromatid and this process is called Terminalisation.

Appearance of kinetic spindles.