Questions and Answers
What happens during Early Prophase 1?
What is the main event that occurs during Late Prophase 1?
What occurs during Metaphase 1?
Independent assortment of all the bivalents.
What happens during Anaphase 1?
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What is the outcome of Telophase 1?
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What is the end result of Meiosis 1?
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Study Notes
Early Prophase 1
- Homologous non-sister chromatids form pairs during synapsis.
- Resulting structure is called a bivalent, consisting of homologous sister chromatids.
Late Prophase 1
- Crossing over occurs between homologous non-sister chromatids.
- Chiasmata are formed within the synaptonemal complex, leading to exchange of chromosome sections.
Metaphase 1
- Independent assortment of bivalents takes place.
- Bivalents can orient in multiple ways, allowing for diverse combinations of alleles.
- This process contributes to genetic variation in haploid cells at the end of Meiosis 1 and in gametes at the end of Meiosis 2.
Anaphase 1
- Paired homologs separate and move towards opposite poles of the cell.
Telophase 1
- Homologs complete their migration to cell poles.
- The cell undergoes cytokinesis, resulting in the formation of two daughter cells.
- Daughter cells are now in a haploid state.
End Result of Meiosis 1
- Each daughter cell receives one chromosome from each homologous pair.
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Description
Test your knowledge of Meiosis with these flashcards focusing on key stages such as Early Prophase 1, Late Prophase 1, and Metaphase 1. Understand the vital processes like synapsis and crossing over that occur during this critical phase of cell division.
