Lesson Title:
Gametogenesis and Fertilization
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This module serves as a teacher resource providing a written and illustrated explanation of gametogenesis and fertilization in Angiosperms and mammals.
In the life cycle of Angiosperms an alternation of generations occurs in which the haploid gametophyte produces gametes that unite in fertilization to produce a diploid sporophyte. This diploid sporophyte undergoes meiosis to produce haploid spores which grow into the gametophyte. This module focuses on part of the cycle of alternation of generations: meiosis to produce haploid spores and fertilization to produce a diploid zygote which grows into the adult plant. Although animals do not have sporophyte and gametophyte generations, they have specialized diploid tissue which undergoes meiosis to produce haploid gametes. Fertilization results in a diploid zygote that grows into the adult animal.
The module includes the following:
Gametogenesis and Fertilization in Angiosperms
Gametogenesis and Fertilization in Mammals
Laboratory Exploration: Pollen Tube Germination
Supplemental Activities on Gametogenesis and Fertilization
Target Age: Grades 9-12: Biology, including AP Biology.
Background: Review mitosis, meiosis,
gametogenesis, and fertilization.
References:
Campbell, Neil A., Biology, Fourth Edition, The Benjamin/Cummings Publishing Company, Inc., 1996.
Cronkite, Donald, "Life Cycles", Woodrow Wilson Biology Institute, 1997.
Curtis, Helena, N. Sue Barnes, Biology, Fifth Edition, Worth Publishers Inc., 1989.