1. VocabularyDefinitionDrawing DominantObserved trait, masks the recessive form (CAPITAL letter) RecessiveTrait that may be masked by dominant (lower case letter) Genotypeallele combination PhenotypePhysical characteristics, observed Punnett Square A tool to show all the possible allele combinations from two parents HomozygousCombination of alleles for a trait that are the same HeterozygousCombination of alleles for a trait that are different Genetics Key Terms

2. VocabularyDefinitionDrawing DominantObserved trait, masks the recessive form (CAPITAL letter) RecessiveTrait that may be masked by dominant (lower case letter) Genotypeallele combination PhenotypePhysical characteristics, observed Punnett Square A tool to show all the possible allele combinations from two parents HomozygousCombination of alleles for a trait that are the same HeterozygousCombination of alleles for a trait that are different Genetics Key Terms

3. Genetics: One Characteristic Cross Example: Two parents that are heterozygous for non connected eyebrows Genotypic ratios:Phenotypic ratios:

4. Genetics: One Characteristic Cross Example: Two parents that are heterozygous for brown eyes ( Brown eyes are dominant over blue eyes ) Genotypic ratios:Phenotypic ratios:

5. 1a. Crossing CcBb X CCBB Cross the two parents (use punnett squares) What is the chance of the following: Curly hair AND Brown Eyes? Curly hair AND Blue Eyes? Straight hair AND Brown Eyes? Straight hair AND Blue Eyes?

6. Genetics: Two Characteristic Cross C = Curly, c= straight, B = Brown, b=blue Cross CcBb X CcBb What is the chance of the following: Curly hair AND Brown Eyes? Curly hair AND Blue Eyes? Straight hair AND Brown Eyes? Straight hair AND Blue Eyes?