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

Explanation:

Step1: Define Alleles

Let \( P \) be dominant (purple), \( p \) recessive (white). Heterozygous: \( Pp \).

Step2: Set Up Punnett Square

Cross \( Pp \times Pp \). Gametes: \( P, p \) from each.

	\( P \)	\( p \)
\( p \)	\( Pp \)	\( pp \)

Step3: Determine Phenotypes

• \( PP, Pp, Pp \): purple (3)
• \( pp \): white (1)

Step4: Find Ratio

Purple:White = \( 3:1 \).

Answer:

A. 3:1