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Asexual vs. Sexual Reproduction

Asexual vs. Sexual Reproduction. Asexual reproduction. 1 parent. The primary form of reproduction for single-celled organisms such as archaea, bacteria, and protists. Some plants and fungi reproduce asexually as well. . Sexual Reproduction. 2 parents

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Asexual vs. Sexual Reproduction

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  1. Asexual vs. Sexual Reproduction

  2. Asexual reproduction • 1 parent. • The primary form of reproduction for single-celled organisms such as archaea, bacteria, and protists. • Some plants and fungi reproduce asexually as well.

  3. Sexual Reproduction • 2 parents • Results in increasing genetic diversity of the offspring. • Characterized by two processes: • meiosis, halving of the number of chromosomes • fertilization, combining two sex cells • Primary method of reproduction for the vast majority of visible organisms, including almost all animals and plants.

  4. Binary Fission • Asexual • Cell splits and replicated DNA goes with each part • Prokaryotes, Bacteria • + Fast and easy • - Everybody has the same DNA

  5. Bacterial Conjugation • Does not produce offspring, changes parent. • A bacteria shoots out a tube and sends a piece of its DNA to another bacteria • Bacteria • + Mixes DNA • - “Parent” loses a little piece of DNA

  6. Fragmentation/ regeneration • Asexual • Body of parent breaks and produces offspring • Fungi, moss, sea stars, planarian • + Easy • - Parent broken, same DNA

  7. Fragmentation/ regeneration Moss

  8. Budding • Asexual • Offspring grows out of parent • Yeast, hydras • + Fast, somewhat easy • - Same DNA

  9. Pollination • Sexual • Pollen is delivered to female part of plant • Flowering plants • + Plants don’t have to move, mixes DNA • - Need external source for pollination to take place; wind, bee, bat, butterfly etc.

  10. Pollination

  11. Sexual Reproduction • Sexual • DNA from 2 individuals merge to form one • Animals, Plants • + Diverse DNA • - Takes a long time, 2 individuals needed

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