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Aim How and why do organisms reproduce?

Aim How and why do organisms reproduce?. Why do organisms Reproduce?. Reproduction is necessary for continuation of the species. Types of Animal Reproduction. Asexual ( 1- parent) Sexual (2-parents). Asexual Reproduction. Binary Fission Budding Fragmentation (Mitosis).

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Aim How and why do organisms reproduce?

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  1. AimHow and why do organisms reproduce?

  2. Why do organisms Reproduce? • Reproduction is necessary for continuation of the species.

  3. Types of Animal Reproduction • Asexual ( 1- parent) • Sexual (2-parents)

  4. Asexual Reproduction • Binary Fission • Budding • Fragmentation (Mitosis)

  5. Binary Fission Parent has 4 chromosomes • The separation of one parent into two or more individuals of approximately the same size (Mitosis) 4 4 4 Each offspring also has 4 chromosomes

  6. Binary Fission in amoeba

  7. Budding • Process in which an offspring is produced by the outgrowth of an existing parent (Mitosis-identical replication) Yeast

  8. Budding in yeast

  9. Fragmentation • Is the breaking of a body piece which develops into a exact complete adult Starfish

  10. Cloning • From one parent • Creates identical genetic copies • Mitosis • Cloning has been accomplished with sheep and pigs

  11. Sexual Reproduction • It involves two parents that produces offspring that are not identical to parent • DNA comes from Mom and Dad

  12. Sperm and Egg • Sexual reproduction involves the fusion of sperm and egg • Sperm or egg is also referred to as gametes Fertilization

  13. Gametes • Male gamete- Sperm • Female gamete- Egg

  14. Asexual reproduction of organisms normally results in new organisms that contain cells with 1.more chromosomes than are found in the cells of the parent 2.half the number of chromosomes 3.the same number of chromosomes 4.fewer chromosomes that are found in the cells of the parent

  15. The diagrams represent a cell process. If the cell in Diagram 1 contains 4 chromosomes, what is the total number of chromosomes in each cell in Diagram 3? • 8 • 2 • 16 • 4

  16. Which phrases best identify characteristics of asexual reproduction? 1.one parent, union of gametes, offspring similar to but not genetically identical to the parent 2.one parent, no union of gametes, offspring genetically identical to parents 3.two parents, union of gametes, offspring similar to but not genetically identical to parents 4.two parents, no union of gametes, offspring genetically identical to parents

  17. One way to produce large numbers of genetically identical offspring is by 1.cloning 2.fertilization 3.changing genes by agents such as radiation or chemicals 4.inserting a DNA segment into a different DNA molecule

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