AP Biology: Genetics Unit Outline
Meiosis and Life Cycles
J. Miller
Learning Objectives:
3.7 The student can make predictions about natural phenomena occurring during the cell
cycle.
3.8 The student can describe the events that occur in the cell cycle
3.9 The student is able to construct an explanation, using visual representations or
narratives, as to how DNA in chromosomes is transmitted to the next generation via
mitosis, or meiosis followed by fertilization.
3.10 The student is able to represent the connection between meiosis and increased
genetic diversity necessary for evolution.
3.11 The student is able to evaluate evidence provided by data sets to support the claim
that inheritable information is passed from one generation to another generation through
mitosis, or meiosis followed by fertilization.
3.28 The student is able to construct an explanation of the multiple processes that
increase variation within a population.
Lesson Outline:
I.
II.
Introduction to Inheritance
A. Heredity
B. Variation
C. Genetics
1. genes and chromosomes
2. gametes vs. somatic cells (23 vs. 46)
3. asexual vs. sexual reproduction
Life Cycles: Behaviors of Chromosomes
A. Review of Mitosis
B. Definition of Life Cycle
C. Chromosomes
1. karyotypes
2. chromosome types
a. autosomes
b. sex chromosomes
c. homologous chromosomes
3. chromosomes sets
a. diploid (2n)
b. haploid (n)
D. Types of Life Cycles
1. animal
2. plant (some algae)
3. fungus (some protists)
III.
Meiosis
A. Cell Divisions I and II
1. sister chromatids
2. homologous chromosome (homolog)
B. Meiosis I
1. Prophase I
2. Metaphase I
3. Anaphase I
4. Telophase I and Cytokinesis
C. Meiosis II
1. Prophase II
2. Metaphase II
3.Anaphase II
4. Telophase II and Cytokinesis
D. Gametogenesis
1. spermatogenesis
2. oogenesis
E. Comparison of Mitosis and Meiosis
Property
Mitosis
DNA
Replication
No. of Divisions
Synapsis
No. of cells and
composition
Role
IV.
Genetic Variations
A. Independent Assortment
B. Crossing Over
C. Random Fertilization
Meiosis