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Angelo Smith

Angelo Smith

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Angelo Smith

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  1. Angelo Smith Reproduction of organisms

  2. Menu – Forms of Reproduction • Sexual Reproduction • What is Asexual Reproduction • Budding • Parthenogenesis • Regeneration • What is Sexual Reproduction? • Sexual Reproduction • Gametogenesis • Steps in Fertilization • Process of Meiosis Video • Sexual Vs. Asexual • Sexual Vs. Asexual Comparison • Source Citations

  3. Forms of reproduction • Asexual • Budding • Regeneration • Parthenogenesis • Sexual • Mating

  4. What is asexual reproduction? • Is the reproduction of an organism without the fusion of gametes (sperm and egg) • Production of a new organism without a 2 party interaction for fertilization

  5. Asexual reproduction • Does not require mating • Little genetic diversity in the reproduction • You usually see this in sessile invertebrates that live in constant environments • You see this form of reproduction in bacteria and other single celled organisms

  6. Budding - The asexual process of budding can be explained a organism leaching /developing off another organism - Hydra use this form of Asexual reproduction to produce new organisms

  7. Parthenogenesis Is the development of offspring from unfertilized eggs Females can act as males in some species Produce a hormone that can fertilize their eggs in absence/abundance of male population You see rotifers use this method to sometimes produce

  8. regeneration • Star fish, lizards, planarians, sharks, spiders amongst many other organisms that regenerate for reproduction • Many organisms can regenerate – that is, regrow or grow new parts of their bodies to replace those that have been damaged. • http://www.factmonster.com/ipka/A0768606.html

  9. What is sexual reproduction • Sexual reproduction is the production of new living organisms by combining genetic information from two individuals of different sexes (male and female)

  10. Sexual reproduction • Sexual reproduction requires more use of energy than asexual reproduction • Promotes high level of genetic diversity • Crossing over and Ind. Assortment of genetic information of the male and female • Undergoes a 3 step process to fertilization

  11. Gametogenesis • - Required for the rise of the germ cells • - Process in which diploid of cell turns • haploid for both mother and father • before fertilization • This process occurs in the gonads • Ovaries in females • Gametes are larger and sessile • Testes in males • Gametes are small and motile

  12. Steps of fertilization (Sexual) • Gametogenesis • Involves a special type of cell division called meiosis • Process of genetic material from the parents being cut in half • Mating • The pairing of the opposite sex for copulation • Copulation is the union of the sex organs of two sexually reproducing animals for insemination and fertilization • Fertilization • The union of haploid egg and sperm in production of a zygote, or fertilized egg

  13. Meiosis http://www.neok12.com/Reproductive-System.htm

  14. Sexual vs. Asexual

  15. Compare and contrast Asexual Sexual • Requires the union of 2 individuals to produce offspring (male & female) • Wide range of genetic variation in offspring • Only mammals use this form of reproduction • Only requires 1 parent to produce offspring • Little genetic diversity seen in daughter organisms • Only bacteria and single celled organisms use this

  16. Sources and citations • http://www.factmonster.com/ipka/A0768606.html • - Google Images • http://en.wikipedia.org/wiki/Mating • - Information of Reproduction • http://teachertube.com/viewVideo.php?video_id=249284 • - Power Point Audio