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Get Answers to all your Questions
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In which stage of meiosis, chromosomes are thin, long, thread like?
Option: 1
Zygotene
Option: 2
Leptotene
Option: 3
Pachytene
Option: 4
Diakinesis
Answers (1)
Stages of Meiosis ? - Prophase I -
Stages of Meiosis ? - Prophase I
- In meiosis I, the actual reduction in the number of chromosomes occurs.
- It starts after the homologous chromosomes have replicated during S-phase and the proteins required for division have been synthesized in G2 phase.
- Therefore, it occurs after the interphase of cell cycle.
- It is studied under Prophase I, Metaphase I, Anaphase I and Telophase I.
Prophase I
- It is the longest phase of meiosis I.
- It is divided into five substages: leptotene, zygotene, pachytene, diplotene and diakinesis.
LEPTOTENE:
- The chromatin begins to condense to form chromosomes.
- Chromosomes appear as thin and long threads.
- By the end of this phase, chromosomes become visible under microscope.
-
During leptotene of meiosis, chromosomes are thin, long, thread like.
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