Genetics Dominance Patterns and Crosses Revealed
Explore dominant and recessive traits in genetics through two scenarios involving tongue rolling in humans and flower traits. Understand how genotype ratios determine phenotype outcomes in offspring.
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Presentation Transcript
Genetics Unit 1 Review
In humans, being a tongue roller (R) is dominant over non-roller. A man who is a non-roller marries a woman who is heterozygous for tongue rolling. Father s genotype: ________ Mother s genotype: ________ Genotype ratio: Phenotype ratio:
In a particular species of flower, tall (T) is dominant to short, and orange petals (F) are dominant to the recessive white color. Cross a homozygous tall white flower with a flower heterozygous for both traits. Parent 1 genotype: ________ Parent 2 genotype: ________ Genotype ratio: Phenotype ratio:
