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Asexual and Sexual Reproduction

Asexual and Sexual Reproduction. Mrs. Anna Ward Ridge Road MS. Warm-Up ANSWER IN COMPLETE S ENTENCES. What is the result of reproduction? Why do organisms bother to reproduce? Why don't they just live forever?

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Asexual and Sexual Reproduction

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  1. Asexual and Sexual Reproduction Mrs. Anna Ward Ridge Road MS

  2. Warm-Up ANSWER IN COMPLETE SENTENCES • What is the result of reproduction? • Why do organisms bother to reproduce? Why don't they just live forever? • What would eventually happen to a species if every member suddenly lost its ability to reproduce?

  3. Announcements • Tutoring • Science Fair Projects • Touch Base with Teachers…Tomorrow • Inherited and Acquired Traits Sheet

  4. Single Celled Organisms • http://www.teachersdomain.org/resource/tdc02.sci.life.stru.singlecell/ • What type of reproduction -- asexual or sexual -- do most single-celled organisms use? • What must a single-celled organism do before it can reproduce? • When a single-celled organism reproduces, what is the result? • In what ways, if any, does a single-celled organism differ from its parent?

  5. Sexual encounters of the Floral Kind • http://www.teachersdomain.org/resource/tdc02.sci.life.stru.floral/ • What type of reproduction -- asexual or sexual -- do most plants use? • What nonliving force do plants rely on most often for pollination? • What are some of the ways in which plants encourage or trick animals into carrying their pollen to other plants? • What proportion of each parent plant's genetic material does each offspring plant have?

  6. Asexual Reproducers • http://www.teachersdomain.org/resource/tdc02.sci.life.repro.asexual/ • What type of reproduction -- asexual or sexual -- do the whiptail lizards in the video use? • How many parents do whiptail lizards have? • How do young whiptail lizards differ from their parents, if at all? • How much of their parent's genetic material do whiptail lizards have?

  7. The Red Queen • http://www.teachersdomain.org/resource/tdc02.sci.life.evo.redqueen/ • What are the differences between the two species of minnows featured in the video? • Which species -- the asexual or the sexual reproducers -- tends to be more heavily parasitized by the worm that causes black-spot disease? • How are the sexual reproducers able to evolve defenses against parasites more quickly and more effectively than their asexual counterparts?

  8. The Mating Game • Read the Article and Answer these three questions in your science notebook.. • Why does sexual reproduction provide more genetic variation? • Why would sexual reproduction be an advantage to a species? • What would be a disadvantage of sexual reproduction?

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