Reproduction + in flowering plants

• Does sexual reproduction involve meiosis or mitosis

  Meiosis
• Does asexual reproduction involve meiosis or mitosis

  mitosis
• What is asexual reproduction?

  Production of genetically identical offspring from a single parent and reproduction of offspring w/o fusion of gametes
• What is sexual reproduction?

  a process involving the fusion of the nuclei of two gametes to form a zygote and the production of offspring that are genetically different from each other
• What is a zygote

  a diploid cell (46) resulting from the fusion of two haploid gametes; a fertilized egg.
• What is a gamete

  A sex cell
• What are the gametes in an animal

  sperm (male) and eggs (female)
• What are the gametes in a plant

  Why do gametes have a haploid nucleus
• Why do gametes have a haploid nucleus

  They contain half the number of chromosomes (23) found in other body cells (46)
• Advantages of sexual reproduction: variation

  It increases genetic variation, meaning species can adapt to new environments due to variation, giving them a survival advantage
• Advantages of sexual reproduction: disease

  Due to variation, disease is less likely to affect population
• Disadvantages of sexual reproduction: mates

  have to find and compete for mates, taking time and energy
• Disadvantages of sexual reproduction: isolated members

  It's difficult for isolated members of species to reproduce
• What does asexual reproduction not involve

  fusion of gametes or fertilisation
• How can you describe the offspring in asexual reproduction

  Genetically identical to parent and each other; clones
• What is binary fission

  How bacteria asexually reproduce, producing exact genetic copies of themselves
• Advantages of asexual reproduction: mates

  Only one parent needed, so it's more time and energy efficient- no need to find and compete for another mate
• Advantages of asexual reproduction: speed

  Asexual reproduction is completed much faster than sexual reproduction so more time efficient
• Disadvantages of asexual reproduction: disease

  Disease is likely to affect whole population as there's no genetic variation