QUESTION IMAGE
Question
purple flowers are dominant over white flowers. a heterozygous purple flower is crossed with another heterozygous purple flower. what will the ratio of purple to white be? 3:1 1:3 2:2 4:0
Step1: Definir alelos
Sea \( P \) el alelo dominante (flor morada) y \( p \) el alelo recesivo (flor blanca). Los padres son heterocigotos \( Pp \).
Step2: Tabla de Punnett
| \( P \) | \( p \) | |
|---|---|---|
| \( p \) | \( Pp \) (morada) | \( pp \) (blanca) |
Step3: Calcular proporciones
Hay 3 descendientes con fenotipo morado (\( PP, Pp, Pp \)) y 1 descendiente con fenotipo blanco (\( pp \)). La proporción es \( 3:1 \).
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A. 3:1