PARTA – The stages of meiosisCan you recognize the eight stages of meiosis based on the location and behavior of the chromosomes?Drag the diagrams of the stages of meiosis onto the targets so that the four stages of meiosis I and the four stages of meiosis II are in the proper sequence from left to right. (Note that only one of the two daughter cells is shown for meiosis II.)
[Meiosis involves two sequential cellular divisions. In meiosis I, homologous chromosomes pair and then separate. Thus, although the parent cell is diploid (containing two chromosome sets, one maternal and one paternal), each of the two daughter cells is haploid (containing only a single chromosome set). In meiosis II, the sister chromatids separate. The four daughter cells that result are haploid.]
Here are the eight stages of meiosis with brief descriptions:
Meiosis I:
1. Prophase I: Chromosomes condense and homologous chromosomes pair up, a process called synapsis. Crossing over may occur.
2. Metaphase I: Homologous chromosome pairs line up at the equator of the cell.
3. Anaphase I: Homologous chromosomes separate and move towards opposite poles of the cell.
4. Telophase I: Chromosomes reach opposite poles of the cell and a nuclear envelope reforms around them. Cytokinesis may occur, resulting in two daughter cells.
Meiosis II:
5. Prophase II: The nuclear envelope breaks down and the spindle apparatus forms.
6. Metaphase II: Chromosomes line up at the equator of the cell.
7. Anaphase II: Sister chromatids separate and move towards opposite poles of the cell.
8. Telophase II: Chromosomes reach opposite poles of the cell and a nuclear envelope reforms around them. Cytokinesis occurs again, resulting in a total of four daughter cells.
More Answers:
Animal Life Cycle: A Comprehensive Guide from Gametes to Juvenile/Adult StageUnderstand the Meiosis Process: Reduction in DNA Content and Ploidy Level Explained
Exploring Crossing Over in Meiosis: The Process, Consequences, and Genetic Variation.