Sci 9 Lesson 8 April 18 - Assisted Reproductive Technologies


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Sci 9 Lesson 8 April 18 - Assisted Reproductive Technologies

  1. 1. Homework from last class: <ul><li>Complete the Check Your Understanding questions on </li></ul><ul><li>p. 223: 10, 12, 17, 18, 19, 20 </li></ul>
  2. 2. Chapter 6 pp. 224-230 Ch. 6.3 Assisted Reproductive Technologies
  3. 3. Assisted Reproductive Technologies <ul><li>Many people seek Assisted Reproductive Technologies (ART) if they are infertile. </li></ul><ul><li>Infertility: the inability of a couple to have a baby </li></ul>Most assisted reproductive technologies involve: 1) Removing eggs from the woman 2) Fertilizing the eggs 3) Returning the fertilized eggs to the uterus.
  4. 4. Types of Assisted Reproductive Technologies <ul><li>Artificial Insemination (AI): a reproductive technology that includes collecting sperm from a male and injecting into a female </li></ul><ul><li>AI is widely used to breed farm animals , especially dairy cattle </li></ul>
  5. 5. Types of Assisted Reproductive Technologies <ul><li>In Vitro Fertilization (IVF): technology used to treat specific fertility problems by fertilizing an egg cell in a petri dish </li></ul><ul><li>“ in vitro” means in glass </li></ul><ul><li>In IVF, egg and sperm are collected and fertilization takes place in a dish . Embryo(s) are then placed in the female’s uterus. </li></ul>
  6. 6. Video – “In Vitro Fertilization”
  7. 7. Types of Assisted Reproductive Technologies <ul><li>Gamete Intrafallopian Transfer (GIFT): an assisted reproductive technology in which eggs and sperm are collected, mixed, then injected into the woman’s fallopian tubes. </li></ul><ul><li>Fertilization takes place inside the woman’s body </li></ul><ul><li>Intracytoplasmic Sperm Injection (ICSI): </li></ul><ul><li>a specialized procedure in which a single sperm cell is injected into an egg cell. </li></ul><ul><li>The zygote is then inserted into the woman’s uterus. </li></ul><ul><li>ICSI has a 25% success rate. </li></ul>
  8. 8. The Impact of Assisted Reproductive Technologies on Society <ul><li>Reproductive technologies can help childless couples, but may carry a higher risk of birth defects. </li></ul><ul><li>Q: Should we continue to use a technology that carries an extra risk? </li></ul><ul><li>Often ARTs result in “leftover” embryos. </li></ul><ul><li>Q: What should be done with them? </li></ul><ul><li>Most children conceived by AI will never know the identity of their fathers. </li></ul><ul><li>Q: Is it fair to a child to keep this information secret? </li></ul>
  9. 9. Homework for next class: <ul><li>Complete the “Types of assisted reproductive technologies” worksheet (p. 94 in BC Science 9 workbook) if not already completed in class </li></ul><ul><li>Complete Unit 2 Reproduction: Biology Review (Ch. 4-6) to prepare for the Ch. 4-6 Reproduction review next class </li></ul><ul><li>Begin working on 30 Ch. 6 cue cards due on the day of the Reproduction unit test (Ch. 4-6) </li></ul><ul><ul><li>Tuesday, April 26 for Block 2-4 </li></ul></ul><ul><ul><li>Wednesday, April 27 for Block 1-1 </li></ul></ul><ul><li>Read over class notes and check class blog </li></ul><ul><li> </li></ul>
  10. 10. Works Cited <ul><li>Images taken from the following sources: </li></ul><ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul>