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Types of Asexual Reproduction

Types of Asexual Reproduction. 3/17/2008. Do Now:. Responsible for growth, differentiation, and asexual reproduction. Forms sex cells (sperm and eggs). ½ the number of chromosomes compared to the parent cell. Genetically identical to parent cell. One replication and two divisions.

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Types of Asexual Reproduction

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  1. Types of Asexual Reproduction 3/17/2008

  2. Do Now: Responsible for growth, differentiation, and asexual reproduction Forms sex cells (sperm and eggs) ½ the number of chromosomes compared to the parent cell Genetically identical to parent cell One replication and two divisions One replication and one division 4 daughter cells formed 2 daughter cells formed

  3. Asexual Reproduction • Involves the process of • Offspring are genetically to parent mitosis identical

  4. Binary Fission • Parent divides into halves after nucleus replicates • No parent remains daughter cells grow to normal size • Occurs in , , and 2 equal 2 bacteria protozoa algae

  5. Budding • Parent organism divides into halves • Daughter cell forms from outgrowth or off parent • Buds may or remain attached and form a 2 unequal bud break off colony

  6. Occurs in and hydra yeast

  7. Sporulation (spore forming) • Production of many in a special spore producing structure ( ) • Spores are , specialized cells, containing and within a hard case • Occurs in , , and spores spore case microscopic nucleus cytoplasm molds mushrooms ferns

  8. Regeneration • Ability to back missing parts • The more the organism, the it is to regenerate • Occurs in simple organisms such as and grow complex harder starfish flat worm

  9. Humans?

  10. Vegetative Propagation piece • of a body of a multicellular organism gives rise to a organism • Common in - using stems, leaves, or roots • Can occur or new plants naturally artificially

  11. Natural Vegetative Propagation • Bulb- • Corm- • Tuber- • Runner- • Rhizome- Short underground stem with stored food & fleshy leaves Ex. Onion, tulip Short underground stem with stored foodEx. Water chestnut Enlarged underground stem Ex. potato (stolon) horizontal stem with buds along ground’s surface Ex. strawberry Underground horizontal stem Ex. ginger

  12. Tuber Runner Bulb Corm Rhizome

  13. Artificial Vegetative Propagation part • Cutting- use of plant to reproduce (Ex. ) • Layering- stem is over and covered with  will root and form plant (Ex. ) • Grafting- stem or bud of one plant is to another plant (Ex. ) Spider plant soil bent new raspberry joined permanently Seedless fruit tree

  14. scion stock Layering Grafting

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