y y
y yy yy
y yy yy
100% green
50% yellow; 50% green
50% yellow/green; 50% green
100% yellow

Question

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "multiple_choice_formatter", "explain_then_answer", "tutor", "mastery_adaptive_brevity" ], "needs_drawing": false, "concepts_used": [ "Punnett Square", "Dominant and Recessive", "Genotype and Phenotype" ], "new_concepts": [], "current_concepts": [ "Punnett Square", "Dominant and Recessive", "Genotype and Phenotype" ] } ## Analyze the parental genotypes Using the *Punnett Square* knowledge point $$ \begin{aligned} &\text{Parent 1 (left): } Yy \quad (\text{yellow phenotype})\ &\text{Parent 2 (top): } yy \quad (\text{green phenotype}) \end{aligned} $$ ## Determine the offspring genotypes Using the *Punnett Square* knowledge point $$ \begin{aligned} &\text{Top-left cell: } Yy\ &\text{Top-right cell: } Yy\ &\text{Bottom-left cell: } yy\ &\text{Bottom-right cell: } yy \end{aligned} $$ ## Determine the offspring phenotypes Using the *Dominant and Recessive* and *Genotype and Phenotype* knowledge points $$ \begin{aligned} &Yy \implies \text{Yellow phenotype (dominant } Y)\ &yy \implies \text{Green phenotype (recessive } y) \end{aligned} $$ ## Calculate the phenotypic ratio Using the *Genotype and Phenotype* knowledge point $$ \begin{aligned} &\text{Yellow: } \frac{2}{4} = 50\%\ &\text{Green: } \frac{2}{4} = 50\% \end{aligned} $$

100% green

50% yellow; 50% green

50% Yellow/Green; 50% green

100% yellow

{ "subject": "Natural Science", "question_type": "Multiple Choice", "knowledge_point": [ "Natural Science", "Biology", "Mendelian Genetics" ] }

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QUESTION IMAGE

Question

Explanation:

Analyze the parental genotypes

Determine the offspring genotypes

Determine the offspring phenotypes

Calculate the phenotypic ratio

Answer: