1. Heredity

2. Heredity
Heredity: sum of qualities that were passed from your ancestors through your parents to you.
Makes you unique
Hair color, facial features, height??
Helps you understand yourself
Major factor in personality development

3. Genes
Influence the way you look, feel and behave. Chromosomes: carry heredity information from each parent. Inherit 23 chromosomes from each parent=46 DNA Allele: 2 per gene.. One from mom and one from dad Gene: basic unit of heredity Traits: characteristics

4. Characteristics
What are your characteristics that have been inherited from your parents? Ex: Blue eyes like my mother Curly hair like my father

5. Dominant vs Recessive Dominant: stronger gene Recessive: weaker gene
Dominant gene always overrules a recessive gene.
Recessive genes only show up when two genes are present.

6. Genotype vs Phenotype Genotype: genetic constitution of someone
Capital letter=dominant
Lowercase letter=recessive
Phenotype: actual characteristic (what shows up)

7. Punnett Square
Determines what possible gene pairs may result from combining two genes.
Genes of parents indentified on adjacent sides of square
Each possible combination recorded in box.

8. Sex Chromosomes X and Y are sex chromosomes Female=XX Male=XY
Sex determined by the father