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Types of Reproduction

Types of Reproduction

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Types of Reproduction

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  1. Types of Reproduction Asexual Sexual

  2. Purpose of Reproduction • To make sure a species can continue. • Definition: Reproduction is the process by which an organism produces others of its same kind, we call these offspring.

  3. Asexual Reproduction • A new organism (sometimes more than one) is produced from one organism (parent). • The offspring will have the same hereditary material as the parent. This means they will be genetically alike. • Some plants reproduce asexually

  4. Asexual Reproduction • For example, all offspring that is reproduced asexually from this plant will be identical genetically.

  5. Types of Asexual Reproduction • Budding • Regeneration • Fission (Binary fission)

  6. Budding • Process by which a new, duplicate plant or animal begins to form at the side of the parent and enlarges until an individual is created. • Very common in plants;

  7. http://www.waycross.edu/faculty/bmajdi/hydra%20budding.jpg

  8. http://judyepstein.com/images/DesertImages/Budding-Purple-LG.jpghttp://judyepstein.com/images/DesertImages/Budding-Purple-LG.jpg

  9. Regeneration • The ability to restore lost or damaged tissues, organs or limbs. • It is a common feature in invertebrates, like worms and starfish.

  10. http://www.vsf.cape.com/~jdale/science/starfishregenerating.jpghttp://www.vsf.cape.com/~jdale/science/starfishregenerating.jpg

  11. http://classes.design.ucla.edu/Spring05/152BC/projects/saito/ex3/planaria.jpghttp://classes.design.ucla.edu/Spring05/152BC/projects/saito/ex3/planaria.jpg

  12. Fission • Also called binary fission. • Becoming two by division of the complete organism. • A type of cell division. • Cells divide through a process called mitosis.

  13. Mitosis- aka Cell Reproduction • Chromosomes in the nucleus duplicate or make a copy of themselves so after the cell splits, each cell has the same number of chromosomes. • Mitosis produces diploid cells, cells whose chromosomes come in pairs.

  14. http://wappingersschools.org/RCK/staff/teacherhp/johnson/visualvocab/BinaryFissionParamecium.jpghttp://wappingersschools.org/RCK/staff/teacherhp/johnson/visualvocab/BinaryFissionParamecium.jpg

  15. http://coris.noaa.gov/glossary/binary_fission_186.jpg

  16. Sexual Reproduction • Requires two sex cells – egg and sperm • Sex Cells are made through a process called Meiosis. • Sex cells are called haploid cells because they contain one pair of chromosomes. A single chromosome is called a chromatid. This means that sex cells have half of the number of chromosomes than your other body cells; therefore no pairs. • The egg and sperm join to form an entirely different organism since half the chromosomes come from the male (sperm) and the other half from the female (egg). • The Offspring are different from the parent organism

  17. KEY POINT TO KNOW… • Asexual reproduction results in offspring that are genetically identical to the parent organism • Sexual reproduction results in offspring that are genetically different from the parent organisms