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Chapter 4: L5 / L6

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    Inherited characteristics + responding to the environment's stimuli
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  • Who is "the father of genetics"?
    George Mendel
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  • Who is George Mendell? (4)
    - Monk - mid 19th century(1800s) -noticed that peas inherit their characteristics from their parents -father of genetics
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  • Heredity
    Science that studies the passing of characteristics from parents to offspring
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  • Characteristics
    Qualities of an organism
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  • What did George Mendell notice?
    diffrent characteristics in peas (stems, pods, leaves, lowers...)
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  • Inherited characteristics of plants, example, The prickly pear cactus: (3(
    -Sharp spines (long/short) - paddle flattened stems - stems: waxy covering
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  • Why do organisms need the characteristics that they inherited from their parents?
    To survive the environment
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  • Talk about animals' inherited characteristics:
    Zebras: Black and white stripes (fingerprint) / Manes (short and stand on their necks)
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  • Talk about human beings' inherited charactericteristics :
    Height (tall/ short) / eye colour / hair colour
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  • Define "Environment"
    Everything that surrounds a living thing
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  • What is an "Environment Stimilus" ? (3)
    1- causes a reaction in a living thing 2- stimuli can be internal or external 3- plural: stimuli
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  • Define "Behavior" (2)
    Response to the environment/ the way animals act
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  • Define "Instincts"
    Inherited behaviors
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  • What are the 3 ways by which animals can respond to their environment's stimilus? (3)
    Behaviors / instincts / learned behaviors
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  • Animals can respond to their environment by behaviors. Give 2 examples.
    Response to the environment stimilus: turtle pulls its head / Response to internal stimilus: huger -> get food
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  • What is this?
    Fingerprint
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