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Do Now- work with table. Given the color scheme below: Cell membrane – chalk Chromosomes/chromatin (DNA) – orange Centrioles - yellow Spindle Fibers - purple Centromere – red Nucleus – green Re-create prophase on your desk. Asexual vs. Sexual Reproduction. Make a Venn Diagram.

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Do now work with table
Do Now- work with table

  • Given the color scheme below:

    • Cell membrane – chalk

    • Chromosomes/chromatin (DNA) – orange

    • Centrioles - yellow

    • Spindle Fibers - purple

    • Centromere– red

    • Nucleus – green

  • Re-create prophase on your desk



  • Make a venn diagram
    Make a Venn Diagram

    Asexual Reproduction

    Sexual Reproduction

    Both

    Types of reproduction in living organisms

    Pass DNA from parent to offspring


    Asexual reproduction
    Asexual Reproduction

    • Requires only one parent

    • Offspring have 100% the same chromosomes as the parent.

      • In other words, the offspring are exact “clones” of the parent.

      • Most unicellular organisms

        reproduce this way.

      • Mitosis

      • Movie


    Asexual reproduction1
    Asexual Reproduction

    • Binary Fission

      • Bacteria

      • Protists

    Binary fission is a form of asexual reproduction where every organelle is copied and the organism divides in two.


    Asexual reproduction2
    Asexual Reproduction

    • Plant cuttings

    Vegetative reproduction is a type of asexual reproduction in plants that relies on multi-cellular structures formed by the parent plant.  It has long been exploited in horticulture and agriculture, with various methods employed to multiply stocks of plants.


    Asexual reproduction3
    Asexual Reproduction

    • Budding

      • Hydra

        • Movie

    Budding is a means of asexual reproduction whereby a new individual develops from an outgrowth of a parent, splits off, and lives independently.


    Asexual reproduction4
    Asexual Reproduction

    • Fragmentation

    Fragmentation is a means of asexual reproduction whereby a single parent breaks into parts that regenerate into whole new individuals.


    Asexual reproduction5
    Asexual Reproduction

    • Regeneration

    Regeneration occurs when a body part has broken off and the organism grows a new one.


    Asexual reproduction6
    Asexual Reproduction

    • Examples of organisms that reproduce asexually

      • Hydra

      • Sea Star

      • Strawberry

      • Bacteria

      • Euglena

      • Paramecium

      • Yeast


    Sexual reproduction
    Sexual Reproduction

    • Requires two parents that each share ½ of the genetic information.

      • Offspring share the characteristics of each parent.

      • Meiosis


    Sexual reproduction1
    Sexual Reproduction

    • All the members of the Animal Kingdom

      • Fish

      • Mammals

      • Amphibians

      • Birds

      • Reptiles

      • Insects

      • Crustaceans


    Sexual reproduction2
    Sexual Reproduction

    • Plant Kingdom

      • Flowers are the reproductive organs of plants.

      • Some flowers have both male and female reproductive organs on the same flower.

    Male flower

    Female flower


    Sexual reproduction3
    Sexual Reproduction

    • Examples of organisms that reproduce sexually

      • Chickens

      • Iguanas

      • Lobsters

      • Sharks

      • Humans

      • Butterflies

      • Sunflowers

      • Roses


    Sexual reproduction4
    Sexual Reproduction

    • Happens 2 ways

      • Internally (inside)

        • The egg is fertilized by sperm inside the female

          • Mammals, birds, reptiles, insects, spiders

      • Externally (outside)

        • The egg is fertilized by sperm outside the female

        • The female lays the eggs and then the male fertilizes them.

          • Fish and some amphibians

          • Plants and fungi (pollen and spores)


    Sex cells vs body cells
    Sex cells vs Body cells

    • Body Cells

      • Called “somatic” cells

      • Divide by cell division (mitosis)

      • Growth, repair, and maintenance of the body

    • Sex Cells

      • Called “gametes”

      • Include sperm (male) and egg (female) in humans

      • Divide by meiosis

      • Each gamete contains only half the number of chromosomes (haploid)

      • When the gametes join, the offspring will have a full set of chromosomes (diploid)


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