1. Algae Reproduction

2. Alternation of Generations
1. Gametophyte
Haploid (n)
Meiosis produces spores that grow mitotically into a gametophyte
Sexual reproduction
Gametophyte produces gametes which fuse to form a zygote

3. 2. Sporophyte
Diploid (2n)
Grows mitotically from zygote & uses meiosis to produce spores
Asexual reproduction

4. Meiosis:
Process that produces HAPLOID gametes from DIPLOID cells (2n  n)

5. Mitosis:
Process by which cell division results in cells with the same number & kind of chromosomes as the parent cell (2n  2n OR n  n)
Daughter cells are IDENTICAL to parent cell

7. Advantages of Alternation of Generations:
Asexual reproduction allow a single organism to reproduce & colonize habitats quickly
Sexual reproduction creates variation within the species which allows for:
Survival of in changing habitats
Resistance to pests
Spores can become dormant which allows for survival in adverse conditions

8. Assignment: Read pp. 440-442 Worksheets on reproduction (x2)