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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 

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Presentation on theme: "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 "— Presentation transcript:

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 Method of 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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