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Genetic Traits Name ________________________________ Date ___________ Period _______ 1. What is the study of genetics? 2. What does the word phenotype mean? 3. What does the word genotype mean? 4. What is an allele? 5. What does dominant mean? 6. What does recessive mean? Trait Earlobes Free or attached Widow’s peak Present or absent Hair body Straight or curly Hair whorl Clockwise or counterclockwise Cleft chin Present or absent Dimples Present or absent Freckles Present or absent Eyelashes Long or short Ear wax Dry or wet Tongue rolling Present or absent Double jointed thumb Present or absent Last joint little finger Bent or straight Mid digit hair Present or absent Handedness Left or right PTC paper Taste or not taste Thiourea paper Taste or not taste Sodium benzoate paper Taste or not taste Phenotype Number free Number attached present absent straight curly clockwise Counterclockwise present absent present absent present absent long short dry wet present absent present absent bent straight present absent left right taste not taste taste not taste taste not taste Dominant Recessive Genotype
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