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Processes of Sexual Reproduction and Meiosis Explained

This topic explores the processes of sexual reproduction and meiosis, including the types of cells produced, differences between mitosis and meiosis, and the genetic makeup of daughter cells.

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Processes of Sexual Reproduction and Meiosis Explained

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  1. Topic: Reproduction Aim: Explain the processes of sexual reproduction and meiosis. Do Now: Take out your meiosis reading notes and the Repro ISN. HW: Study for Monday’s test!!! CL Immune System due Monday! Bring your textbooks on Monday!!!! Male Repro System Reading Notes due Tuesday. Female Repro system Reading Notes due Wednesday.

  2. The dimensions of the board MUST be 36”H x 48”W. • Your exhibit must be VERY NEAT, ATTRACTIVE, AND EASY TO FOLLOW!! • Due Date: NO LATER THAN March 1st TITLE (Problem) Results Data/Graphs/Photos HYPOTHESIS CONCLUSION MATERIALS PROCEDURES VARIABLES Independent Dependent Controls

  3. Cartilage Tendons Identify the structure being described. • Thick layer of tissue that covers the ends of bones. • Thick bands of tissue that attach muscles to bones. • Any place where 2 bones meet. • A tissue that contracts. • Part of the bone that produces blood cells. • Gives the body shape. • Bones that protect the spinal cord. • Minerals that keeps bones strong. • Bones that protect your lungs. • The thigh bone. • Breast bone that helps protect the heart. Joint Muscle Red marrow Skeleton Vertebrae Calcium & phosphorus Rib cage Femur Sternum

  4. Ligaments Identify the structure being described. • Tough bands of tissue that holds bones together. • Upper arm bone also known as the funny bone. • Involuntary muscles of the digestive system. • Part of the bone that stores fat. • Involuntary muscles of the heart. • Gland that regulates calcium metabolism. • Also known as voluntary muscles. • Gland that stimulates the elongation of bones. • Also known as the collar bone. • Bones that protect the brain. Humerus Smooth muscle Yellow marrow Cardiac muscle Parathyroids Skeletal Pituitary Clavicle Cranium

  5. Prophase Anaphase Metaphase Telophase Chromosomes line up in middle Spindle fibers start to form Chromatids start to move to opposite poles Cytokinesis begins Identify the types of cells that reproduce by mitosis.

  6. Identify the phase of mitosis represented in the diagram. Support your answer. • Identify structure X. X

  7. Sporulation

  8. Artificial Vegetative Propagation Cuttings

  9. Binary Fission

  10. Vegetative Propagation Tuber

  11. Budding

  12. Vegetative Propagation

  13. Regeneration

  14. Grafting Artificial Vegetative Propagation

  15. Runners Vegetative Propagation

  16. Sexual reproduction 1. When does meiosis occur?

  17. 2 2. How many divisions occur during meiosis? 23 23 46 23 23

  18. 4 3. How many cells are produced as a result of meiosis?

  19. Chromosome number splits in half 4. Explain what occurs to the number of chromosomes in the resulting cells.

  20. Gametes • Sex cells (sperm and egg) 5. Identify the types of cells produced as a result of meiosis.

  21. Gonads 6. Identify the location of meiosis in males and females.

  22. Genes get shuffled around • Results in daughter cells not being identical to each other. 7. Describe what occurs to the genes in a cell undergoing meiosis.

  23. 8. Describe 3 differences between mitosis and meiosis.

  24. Mitosis • Asexual • Same # of chromosomes as the parent cell • One division • Used to reproduce body cells (somatic cells) • Meiosis • Sexual • Half the # of chromosomes as parent cell • Two divisions • Used to produce gametes (sex cells)

  25. Let’s summarize… • Describe the two types of cells that our bodies consist of. • Explain the difference between asexual and sexual reproduction. • Explain the difference between mitosis and meiosis.

  26. A B C D E • What process is represented in the diagram? • Describe the genetic makeup of daughter cells. • What does phase A represent? What occurs in this phase? • Explain what is occurring at phase E.

  27. What is the name of the process that produces gametes? • Mitosis • Binary fission • Asexual reproduction • Meiosis

  28. Cells such as nerve cells and muscle cells reproduce by the process of • meiosis • mitosis • binary fission • budding

  29. Which statement is true about sexual reproduction? • It produces offspring with half the number of chromosomes as the parent. • It involves sex cells joining together. • It produces offspring that are genetically identical to the parents.

  30. The result of meiosis are daughter cells that have • half the number of chromosomes • a quarter of the number of chromosomes • double the number of chromosomes • the same number of chromosomes

  31. The number of chromosomes found in human gametes is • 46 (2) 92 (3) 23

  32. As a result of mitotic cell division, a cell having 40 chromosomes gives rise to two cells each of which has a chromosome number of _______ chromosomes.

  33. Binary Fission Vegetative Propagation Sporulation Regeneration

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