Meiosis and Sexual Reproduction

Transcription

1 Note-taking Workbook Meiosis and Sexual Reproduction Section: Reproduction ASEXUAL REPRODUCTION Key Idea: An individual formed by asexual reproduction is to its parent. Additional notes about Asexual Reproduction: Reading Check: What is fragmentation? SEXUAL REPRODUCTION Key Idea: In sexual reproduction, give to produce that are genetically from their parents. A gamete is A zygote is Additional notes about Germ Cells and Somatic Cells: Additional notes about Advantages of Sexual Reproduction: Holt Biology 75 Note-taking Workbook

2 Name Class Date CHROMOSOME NUMBER Key Idea: Each chromosome has of genes that play an important role in determining how an organism develops and functions. A diploid is A haploid is Homologous chromosomes are Additional notes about Haploid and Diploid Cells: _ Additional notes about Homologous Chromosomes: _ Additional notes about Autosomes and Sex Chromosomes: _ Reading Check: What kind of cells do germ cells produce? Holt Biology 76 Note-taking Workbook

3 Name Class Date Note-taking Workbook Meiosis and Sexual Reproduction Section: Meiosis STAGES OF MEIOSIS Key Idea: During meiosis, a diploid cell goes through divisions to form haploid cells. Meiosis is Crossing-over is Stages of Mitosis: Stage 1: Prophase I Stage 2: Stage 3: Anaphase I Stage 4: Stage 5: Stage 6: Metaphase II Stage 7: Stage 8: Telophase II Additional notes about Meiosis I: _ Additional notes about Meiosis II: _ Reading Check: In what phase of meiosis is genetic material exchanged? Holt Biology 77 Note-taking Workbook

4 COMPARING MITOSIS AND MEIOSIS Key Idea: Mitosis makes new cells that are used during growth, development, repair and asexual reproduction. Meiosis makes cells that enable an organism to and happens only in. Additional notes about Comparing Mitosis and Meiosis: Reading Check: How are cells formed by mitosis different from cells formed by meiosis in relation to number of chromosomes? Write two sentences that compare and two sentences that contrast meiosis and mitosis. GENETIC VARIATION Key Idea: Three key contributions to genetic variation are. The word exist means Additional notes about Crossing-Over: Reading Check: How can crossing-over increase genetic variation? Holt Biology 78 Note-taking Workbook

5 Independent assortment is Additional notes about Independent Assortment: Additional notes about Random Fertilization: Holt Biology 79 Note-taking Workbook

6 Note-taking Workbook Meiosis and Sexual Reproduction Section: Multicellular Life Cycles DIPLOID LIFE CYCLE Key Idea: In life cycles, meiosis in germ cells of a results in the formulation of. A life cycle is Sperm are An ovum is Additional notes about Diploid Life Cycle: Reading Check: How many gametes are formed from one female germ cell? HAPLOID LIFE CYCLE Key Idea: In life cycles, meiosis in a diploid zygote results in. Additional notes about Haploid Life Cycle: Holt Biology 80 Note-taking Workbook

7 Use the two-column notes below to summarize the stages and details of the haploid life cycle. Haploid Life Cycle Stages Details Diploid Haploid ALTERNATION OF GENERATIONS Key Idea: Plants and most multicellular protests have a life cycle that alternates between a and a called alternation of generations. Additional notes about Alternation of Generation: Holt Biology 81 Note-taking Workbook