Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Mitosis Meiosis Study Guide.notebook
Document related concepts
Transcript
Mitosis Meiosis Study Guide.notebook Interphase cell grows centrioles are copied DNA is copied March 17, 2014 Prophase Centrioles move Spindles form Chromosomes appear Metaphase Cytokinesis The cell membrane divides the cell into two identical daughter cells with 46 chromosomes each. Telophase Two nuclear membranes form Chromosomes begin uncoil into Chromatin The cell membrane begins to pinch in Spindle fibers disappear Prometaphase Nuclear membrane dissolves Spindles grow Nuclear membrane is gone Spindles attach to chromosomes Chromosomes line up in the center of the cell Anaphase Spindles pull chromosomes apart The cell stretches out Mitosis Meiosis Study Guide.notebook March 17, 2014 Meiosis Phase One of Meiosis Interphase 1 Germ cell undergoes Mitosis with crossing over chromosomes and forms 2 daughter cells. Prophase Germ cell grows centrioles are copied DNA is copied and Crossover Occurs Centrioles move Spindles form Chromosomes appear Prometaphase Nuclear membrane dissolves Spindles grow Metaphase Nuclear membrane is gone Spindles attach to chromosomes Chromosomes line up in the center of the cell Telophase Two nuclear membranes form Chromosomes begin uncoil into Chromatin The cell membrane begins to pinch in Spindle fibers disappear Anaphase Spindles pull chromosomes apart The cell stretches out Cytokinesis The cell membrane divides the cell into two identical daughter cells with 46 chromosomes each. Phase Two of Meiosis The two daughter cells split again to form 4 Gametes (egg or sperm) with 23 chromosomes each Gametes egg or sperm egg or sperm Prophase 2 Metaphase 2 Anaphase 2 Telophase 2 egg or sperm egg or sperm Mitosis Meiosis Study Guide.notebook Mitosis March 17, 2014 Meiosis happens in somatic cells happens in germ cells cell nucleus divides into two identical nuclei cell nucleus divides producing gametes with consists of one nuclear division two daughter cells are formed daughter cells have the same one set of unpaired chromosomes (half the number of chromosomes as the parent cell) consists of two nuclear divisions four gametes (daughter cells) are formed number of chromosomes as the parent cell gametes have half the number of chromosomes as the parent cell chromosome pairs in daughter cells are genetically identical to the parent cell combinations of chromosomes in gametes are different than in a parent cell (Crossing Over occurred) helps in growth, maintenance and repair of regular body cells, formation of gametes makes sexual reproduction possible Mitosis Meiosis Study Guide.notebook March 17, 2014 Mitosis Meiosis
