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Asexual Reproduction in Protists & Monerans AND Comparing Sexual & Asexual Reproduction

Asexual Reproduction in Protists & Monerans AND Comparing Sexual & Asexual Reproduction. GOAL. To compare sexual and asexual reproduction in animals, protists and monerans. Define (glossary p. 731). fertilization. Facts: previous knowledge. 1.Male sex cell is called the __________

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Asexual Reproduction in Protists & Monerans AND Comparing Sexual & Asexual Reproduction

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  1. Asexual Reproduction in Protists & Monerans ANDComparing Sexual & Asexual Reproduction

  2. GOAL • To compare sexual and asexual reproduction in animals, protists and monerans

  3. Define (glossary p. 731) • fertilization

  4. Facts: previous knowledge • 1.Male sex cell is called the __________ • 2. Female sex cell is called the __________ • 3. All body cells have ________ chromosomes; sex cells have _____ each so when they join together there will be a full set of 46

  5. Sexual Reproduction in Animals 1. Animals, some plants, fungi, protists 2. 2 parents= male & female 3. Sex cells (Gametes) Male= sperm Female= egg Animals: Sexual Reproduction

  6. Sexual Reproduction Process: Sperm fertilizes egg to form zygote (single cell) Zygote divides repeatedly until it forms an embryo

  7. Sexual Reproduction Process: Embryo develops into a fetus (begins to look like parents) Offspring is born

  8. Sexual Reproduction Diagram • Create a flow chart with pictures to explain the process of sexual reproduction. Label the sperm, egg, zygote, cell division, embryo & fertilization point

  9. Fertilization Animation

  10. Fertilization Animation

  11. Humans- 1 Elephant/horse- 1 Cat- 4/5 Dog- 1/12 Numbers of offspring

  12. Sexual Reproduction in Animals 5. Appearance of offspring a. Two parents b. Two sets of chromosomes c. Two sets of genes d. Genes mix- traits from both parents Animals: Sexual Reproduction

  13. Sexual Reproduction in Animals 6. Number of chromosomes In human body cells = 46 chromosomes In human sex cells = 23 chromosomes Animals: Sexual Reproduction

  14. Sexual Reproduction in Animals 7. Egg (23) + sperm (23) = 46 chromosomes Animals: Sexual Reproduction

  15. Sexual Reproduction in Animals 8. Once fertilization is completed, zygote divides by mitosis (asexual reproduction) Animals: Sexual Reproduction

  16. Describe the process of fertilization Review: Sexual Reproduction in Animals

  17. Describe the development of an organism immediately after fertilization Review: Sexual Reproduction in Animals

  18. Compare the number of chromosomes in sex cells with the number of chromosomes in body cells Review: Sexual Reproduction in Animals

  19. Asexual Reproduction Algae, amoeba bacteria growing animals, plants and fungi Asexual Reproduction Methods

  20. Asexual reproduction • Cloning • http://www.brainpop.com/science/cellularlifeandgenetics/cloning/ • Binary fission • http://www.classzone.com/books/hs/ca/sc/bio_07/animated_biology/bio_ch05_0149_ab_fission.html

  21. Asexual reproduction • Budding • http://www.youtube.com/watch?v=489CSop00sY • Regeneration • http://www.youtube.com/watch?v=f7cXeWxxfD4&feature=related

  22. Asexual reproduction • Asexual reproduction • http://www.brainpop.com/science/cellularlifeandgenetics/asexualreproduction/

  23. Binary Fission 1. Bacteria 2. Organism divides in half 3. 2 identical daughter cells produced (half the size of their parent) 4. Daughter grows to parental size- then divides Asexual Reproduction Methods

  24. Binary Fission Images

  25. Binary Fission Images

  26. Binary Fission Clips

  27. Budding 1. Small bud grows out of parent cell (with identical DNA) 2. Bud breaks off when large enough Ex. Hydra, potato Asexual Reproduction Methods

  28. Hydra Budding Images

  29. Regeneration 1. Living things repair themselves by growing lost body parts from remaining cells 2. Ex: lobsters, starfish, lizards Asexual Reproduction Methods

  30. Regeneration Pictures

  31. Cloning 1. Making exact copies of organisms – gets DNA from only one parent cell 2. Ex. Dolly the sheep Asexual Reproduction Methods

  32. Cloning pictures

  33. Comparing Asexual & Sexual Reproduction • Create a T-chart to compare the following: • How many parents? • Are sex cells needed? • What numbers of chromosomes are involved? (at the beginning and at the end) • Are offspring different from or identical to parents and why? • What types of organisms?

  34. What are the advantages of each: • Asexual- • Sexual-

  35. ANSWERS: • ADV. • Sexual- variation in traits evolution asexual- no mate needed DISADV.

  36. ASEXUAL 46 --> 46 One parent Cells produced are identical to the parent- no gene mixing No Some plants, animals, and fungi SEXUAL 23 + 23 --> 46 Two parents Cells produced are different from their parents- due to gene mixing Yes Bacteria, amoeba, algae, growing plants, animals, and fungi Comparing Reproduction Types

  37. Websites • Animal Reproduction Animations • Animal Life Cycles

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