Inheritance of Traits:

1. Genetics, How and Why
   1. Chromosomes
   2. Genes on Chromosomes
   3. Passing Traits to Offspring
   4. Dominant and Recessive Genes
   5. When Both Parents are Heterozygous
2. Expected and Observed Results
   1. The Punnett Square
   2. Expected Results
   3. Observed Results
   4. Mendel's Work

Human Genetics:

1. The Role of Chromosomes
   1. Chromosome Number
   2. A Way to Tell Chromosome Number
   3. Sex- A genetic Trait
2. Human Traits
   1. Survey of Human Traits
   2. Incomplete Dominance
   3. Blood Types in Humans
   4. Genes on the X Chromosome
3. Genetic Disorders
   1. Errors in Chromosome Number
   2. Genetic Disorders and Sex Chromosomes
   3. Genetic Disorders and Autosomes
   4. Genetic Counseling

DNA- Life's Code:

1. DNA- Life's Code
   1. DNA Structure
   2. DNA and Chromosomes
   3. Proof That DNA Controls Traits
   4. How DNA Works
   5. Making Proteins
   6. How DNA Copies Itself
2. How the Genetic Message Changes
   1. Mutations
   2. Cloning
   3. Plant and Animal Breeding
   4. Splicing Genes