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Published byColin Howard Modified over 9 years ago
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Sexual Reproduction
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My Goals Today I will learn how living organisms reproduce and pass traits to their offspring.
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What is heredity? Heredity is the passing on of traits from one generation to the next.
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What are the two modes of reproduction? Sexual Reproduction and Asexual Reproduction
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How do eukaryotic cells reproduce?
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How do prokaryotic cells reproduce?
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Sexual or Asexual Reproduction?
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How diverse are humans? Create a group with students that are the same height as you.
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1. If these students had the same amount of time to grow, why are they different heights?
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Sexual reproduction creates diverse offspring, or offspring containing a combination of DNA from both parents. Sexual Reproduction
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Produces a special cell with one of each pair of genes – called an egg cell. Female Organism
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Produces a special cell with one of each pair of genes. - sperm cell in animals - pollen in plants. Male Organism
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In animals, sperm is made in the testes of males. Where is sperm made?
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In plants, pollen is made in the stamen. BrainPOP | Science | Learn about Pollination Where is pollen made?
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Sexual Reproduction in Animals
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During fertilization, egg and sperm join together. Once the egg is fertilized, it is called a zygote and will develop into a new organism.
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Asexual Reproduction The production of offspring by a single parent, without the union of a sperm cell and an egg cell.
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Asexual Reproduction The offspring is getting genes from only one parent so they are genetically identical to the parent.
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Types of Asexual Reproduction Budding = a new organism grows from an existing organism and then breaks off. Example = hydra
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Types of Asexual Reproduction Fission = an organism splits in two to create two new organisms. Examples = prokaryotes
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Types of Asexual Reproduction Vegetative Propagation = smaller plants begin to grow off of an adult plant. Examples: grasses growing rhizomes and stolons
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Pros & Cons to Asexual Reproduction Pros – Don’t have to waste energy finding a mate – Can easily produce many offspring Cons – All organisms are genetically identical – They all have the same weaknesses
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What’s happening in these videos? http://www.bing.com/videos/search?q=cell+m itosis&view=detail&mid=350203EF0FC4290C1 1ED350203EF0FC4290C11ED&first=41&FORM =NVPFVR https://www.youtube.com/watch?v=9MnQxiSJ Z4Q Discovery Ed: Meiosis http://app.discoveryeducation.com/search?Ntt=heredityhttp://app.discoveryeducation.com/search?Ntt=heredity Discovery Ed: Patterns of Inheritance http://app.discoveryeducation.com/search?Ntt=heredityhttp://app.discoveryeducation.com/search?Ntt=heredity
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