1. Mendel and his peas Who was Gregor Mendel? Heredity: passing of traits from parents to offspring Mendel: father of heredity He discovered the principles of heredity in the monastery gardens.

2. Mendel’s first experiment A great idea Dominant trait-…traits that appear in the first generation Recessive trait-…traits that seem to disappear and don’t appear until second generation Genes-instructions for an inherited trait Alleles-different forms of a gene

3. Phenotype Genotype Punnett Square Physical appearance Genetic makeup Used to organize all possible combinations of offspring

4. DNA Pieces of the Puzzle DNA’s Double Structure Nucleotides consist of a sugar, a phosphate and a base. The four bases – Adenine, Thymine Guanine, Cytosine Double Helix- a twisted ladder Adenine pairs with Thymine Guanine pairs with Cytosine P S Base

5. Traits Which trait do we see the least of in this class? List four of your traits and four items that are not traits