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Understanding Genetics: A Lesson on Reproduction and Development

Explore the world of genetics, heredity, reproduction, and development. Discover the importance of asexual and sexual reproduction methods, alongside key traits passed from parent to offspring. Get insights into the diverse ways organisms reproduce and develop.

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Understanding Genetics: A Lesson on Reproduction and Development

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  1. DO NOW: TAKE 4 HANDOUTS FORM FRONT • 1. Take out Reinforcement Activity. • 2. Take 2 colored pencils from the tray and sit quietly and write down HW • HW: Complete the venn diagram • Read pages 80-85 in textbook • Study for Meiosis and Reproduction Quiz • Bring in your journals (composition book) if you have not already done so.

  2. Why do genetics and heredity exist? • Life is continuous because of reproduction & development. • Reproduction is necessary for the survival of the species, but not the organism. • There are two ways traits can be passed from parent to offspring.

  3. Asexual reproduction • Requires only one parent   • Doesn’t involve sex cells (sperm & egg)   • Results in growth of another individual   • Offspring are clones of the parents(genetically identical) • Ex: Paramecium Plants

  4. Sexual reproduction • Requires two parents • Involves specialized sex cells • Results in the production of another individual • Offspring are unique – not identical to parent • Ex: Humans Plants • Some organisms reproduce: asexually, sexually, or both ways.

  5. Methods of Asexual Reproduction:   • Budding - offspring grow out of the parent’s body • Ex: Hydra • Internal buds - release a mass of cells that develops internally • Ex: Sea sponge

  6. Fragmentation – organism splits in half   • Ex: Planaria (worms) • Regeneration - piece of the organism detaches & develops • Ex: Starfish

  7. Methodof Sexual Reproduction: • Sex cells join to create a fertilized egg. (Draw in:

  8. Fertilization & development can occur internally or externally. • Internal Fertilization • Ex. Human, dogs • External Fertilization • Ex. Turtles, plants, snake, fish • Internal Development • Ex. Humans, monkey, cats • External Development • Ex. Chicken, lizard, fish, platypus, insects

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