BIOL108 Lecture Notes - Lecture 15: Gametophyte, Sporophyte, Chlamydomonas

• School: University of Alberta
• Department: Biology (Biological Sciences)
• Course: BIOL108
• Professor: Trevor Pasanen

Document Summary

Sexual reproduction, parthenogenesis and variation in sex roles in nature. Next topic: 6 plant diversity, evolution and life cycles. Note: only protists exhibit all three of these life-cycles (collectively) The far right cycle is the ancestral to the other two cycles. Sexual life cycles: multicellular stage (or dominant stage in unicellular species is haploid) Most of cycle is haploid (only cell that is diploid is the zygote) Examples: asexual) (red area = zygotic meiosis) Chlamydomonas life cycle is haplontic (figure 28. 22) (mostly haploid and. Plasmodium life cycle is haplontic (figure 28. 10) Plasmodium is stuck in the mosquitos salivary gland. When mosquito draws your blood, it releases the plasmodium into your blood now you"re infected. they move to your liver, to get energy. While in your liver they go through changes and asexually have daughter cells. Most of this cycle is haploid and asexual. Parasitic cycle with two hosts mosquito & humans.