Genetics Key Terms Vocabulary Definition Dominant Observed trait
Genetics Key Terms Vocabulary Definition Dominant Observed trait, masks the recessive form (CAPITAL letter) Recessive Trait that may be masked by dominant (lower case letter) Genotype allele combination Phenotype Physical characteristics, observed Punnett Square A tool to show all the possible allele combinations from two parents Homozygous Combination of alleles for a trait that are the same Heterozygous Combination of alleles for a trait that are different Drawing
Genetics Key Terms Vocabulary Definition Dominant Observed trait, masks the recessive form (CAPITAL letter) Recessive Trait that may be masked by dominant (lower case letter) Genotype allele combination Phenotype Physical characteristics, observed Punnett Square A tool to show all the possible allele combinations from two parents Homozygous Combination of alleles for a trait that are the same Heterozygous Combination of alleles for a trait that are different Drawing
Genetics: One Characteristic Cross Example: Two parents that are heterozygous for non connected eyebrows Genotypic ratios: Phenotypic ratios:
Genetics: One Characteristic Cross Example: Two parents that are heterozygous for brown eyes (Brown eyes are dominant over blue eyes) Genotypic ratios: Phenotypic ratios:
1 a. Crossing Cc. Bb 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?
Genetics: Two Characteristic Cross C = Curly, c= straight, B = Brown, b=blue Cross Cc. Bb X Cc. Bb 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?
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