CELL DIVISION

• • CELL DIVISION- Process of producing new cells
• • Somatic cells- Body cells
• • Gametes- Sex cells
• MEIOSIS- Responsible for the formation of gametes
• MITOSIS- Takes place in our somatic
• DNA- Deoxyribo - nucleic - acid   (Deoxyribonucleic Acid)
• PMAT

  Prepare- Prophase                                   Away- Anaphase

  Middle- Metaphase                                   The end- Telophase
• Chromatid- One of the two identical halves of a replicated chromosomes
• Chromatins- Appear as an irregular mass
• STAGES OF MITOSIS

  P= 92

  M= 92

  A= 46

  T= 46
• • PROPHASE- Nuclear membrane and nucleus begins to break dow
• METAPHASE

  • Align to the center
• ANAPHASE- Chromatids are pulled away
• TELOPHASE- Final stage of mitosis
• Meiosis I- Brief interphase but no duplication
• Telophase I - 2 daughter cells produced

  • 23 pairs of chromosomes
• Prophase I- Synapsis crossing over; Spindle fibers begin to divide again
• Metaphase I- 23 chromosomes line up along the center
• Anaphase I- Pulling the newly-separated sister chromatids
• Telophase I & Cytokinesis- Cell division begins again in each of the 2 daughter cells creating 4 daughter cells; arrive at the opposite poles
• Meiosis- Fertilization results to the formation of zygote
• • Diploid(two sets of homologous chromosomes) to Haploid