In our lesson last week, myself and a few others decorated some cookies in order to show the stages of meiosisThe blue icing represents the nuclear membrane, and within this you can see the different stages of meiosis, including cytokinesis 1 and 2 at the end. In Prophase 1, you can see the duplicated chromosomes as thedy prepare for metaphase. In Metaphase 1, the chromosomes begin to align and the centrioles are in position at either pole of the cell and send out spindle fibres. In Anaphase 1, the chromosomes pull apart to either side of the cell and the chromatids are pulled away from their original chromosome. In Telophase 1, the chromosomes are at separate poles of the cell and the cell furrow forms, due to the actin constricting it. In Cytokinesis 1, the cell divides into 2 daughter cells and prepares to undergo Prophase 2. In Prophase 2, the centrioles in either daughter cell start to move to either pole, but tghe chromosomes do not replicate this time as they are making haploids (Gametes). In Metaphase 2, the chromosomes line up once more and the spindle fibres start reaching out. In Anaphase 2, the chromosomes are pulled toward either side of the cell and prepare to split again. Finally, In Telophase and Cytokinesis 2, the chropm osomes are pulled fully apart and the cell divides once again.
2 Comments
|
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |