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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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