1. Dominant vs. Recessive
Dominant = trait that is seen over another portrayed as a capital letter Recessive = only seen if with another recessive gene portrayed as a lower case letter

2. Dominant vs. Recessive
Mom = Rr  one dominant, one recessive Dad = rr  two recessive R = red hair r = blue hair Mom = red hair Dad = blue hair

3. Heterozygous / Hybrid Made of one Dominant and one Recessive gene
Also known as Hybrid
Example: Rr

4. Homozygous
Consists of two of the same gene (either dominant or recessive)
Example: RR or rr

5. Homozygous Dominant
Made of two dominant genes
Example: RR

6. Homozygous Recessive
Made of two recessive genes
Example: rr

7. Genotype vs. Phenotype
Genotype = the gene combination Ex: Rr, rr, RR Phenotype: what you physically see Ex: red hair, green eyes, tall, short

8. Punnett Square
A way to determine the percent / chance of the outcome of offspring. Example: A = red hair, a = blue hair Mom = Aa Dad = Aa

9. Punnett Square Practice