Parthenogenesis

• What is parthenogenesis?

  A way of reproducing without a male and female
• What is the chromosome number of the diploid zygote formed in sexual reproduction?

  2n
• What is the chromosome number of the haploid zygote formed in haploid parthenogenesis?


  n
• What is the outcome of parthenogenesis?

  It produces a new individual
• How does the chromosome number differ between the diploid zygote formed in sexual reproduction and the diploid individuals formed in diploid parthenogenesis?

  • In sexual reproduction, the diploid zygote has 2n chromosomes
  • In diploid parthenogenesis, the diploid individual also has 2n chromosomes
• What are the key differences between automixis and apomixis in diploid parthenogenesis?

  • Automixis involves meiosis, while apomixis involves mitosis
  • Automixis produces a diploid egg, apomixis produces a diploid egg cell
• What is the chromosome number in meiotic parthenogenesis?

  Half (n)
• How could you use the physical features of these lizards to identify them?

  • Compare patterns, colors, and body shapes
  • Use field guides or online resources to match the lizards to known species
  • Observe behaviors and habitat to further distinguish the lizards
• What is the chromosome number in ameiotic parthenogenesis?

  Full (2n)
• What is the process of automixis in diploid parthenogenesis?

  The egg undergoes meiosis twice, nuclei fuse
• How does the chromosome number differ between the diploid zygote formed in sexual reproduction and the diploid individuals formed in diploid parthenogenesis?

  • In sexual reproduction, the diploid zygote has 2n chromosomes
  • In diploid parthenogenesis, the diploid individual also has 2n chromosomes
• How is parthenogenesis similar to a plant growing a new shoot?

  Both involve reproduction without seeds or partners
• How does parthenogenesis work?

  An organism creates offspring by itself
• What is the chromosome number of the sperm cell (male germ cell) in sexual reproduction?


  n
• What is the chromosome number of the diploid zygote formed in sexual reproduction?

  2n
• What are the three main forms of parthenogenesis shown in the image?

  • Haploid parthenogenesis
  • Diploid parthenogenesis
  • Automixis and apomixis
• How does the chromosome number change during haploid parthenogenesis?

  The haploid oocyte develops into a haploid individual without meiosis or fertilization
• What is depicted in the image related to parthenogenesis?

  • Three Komodo dragons
  • They can reproduce asexually
  • Example of parthenogenesis
• What type of animals are shown in the image?

  Lizards
• What are the three main forms of parthenogenesis shown in the image?

  • Haploid parthenogenesis
  • Diploid parthenogenesis
  • Automixis and apomixis
• What is the key difference between sexual reproduction and the various forms of parthenogenesis?

  • Sexual reproduction involves meiosis and fusion of gametes (sperm and egg)
  • Parthenogenesis does not involve fertilization, the egg develops without meiosis or fusion with a sperm
• What happens during meiosis in sexual reproduction?

  The diploid zygote undergoes meiosis to form haploid gametes (oocyte and sperm cell)
• What is another benefit of parthenogenesis?

  Population growth
• What is a third benefit of parthenogenesis?

  No need for partners
• How does apomixis differ from automixis in diploid parthenogenesis?

  Apomixis develops directly through mitosis
• What is the main difference between the lizards shown in the image?

  They have different patterns and colors on their bodies
• How does haploid parthenogenesis occur?

  An egg divides via meiosis to develop
• What is the key difference between sexual reproduction and the various forms of parthenogenesis?

  • Sexual reproduction involves meiosis and fusion of gametes (sperm and egg)
  • Parthenogenesis does not involve fertilization, the egg develops without meiosis or fusion with a sperm
• How does the chromosome number change during haploid parthenogenesis?

  The haploid oocyte develops into a haploid individual without meiosis or fertilization
• What is a disadvantage of parthenogenesis related to genetic diversity?

  Limited genetic diversity
• What are the key physical features that distinguish the different lizards in the image?

  • Patterns: Striped, spotted, plain
  • Colors: Brown, yellow, black
  • Body shape and size
• What is the chromosome number of the oocyte (immature female egg cell) in sexual reproduction?


  n
• What are the two types of parthenogenesis mentioned?

  Haploid and diploid parthenogenesis
• What are the two main types of parthenogenesis?

  Ameiotic and meiotic
• What is one benefit of parthenogenesis?

  Rapid reproduction
• Name one organism that uses parthenogenesis.

  Komodo dragons
• Which type of insect is known to reproduce through parthenogenesis?

  Queen bees
• How do egg cells develop in ameiotic parthenogenesis?

  Develop directly from diploid egg, skipping meiosis
• What is the chromosome number of the oocyte (immature female egg cell) in sexual reproduction?


  n
• What type of animals are shown in the image?

  Lizards