Question

a plant can produce either purple flowers or white flowers. the purple flower color is dominant over the white flower color. what is the ratio of the offspring with purple flowers to the total number of offspring if two plants that are heterozygous for purple flowers are crossed? 1:4 2:4 3:4 4:4

Explanation:

Step1: Determine the genotypes of the parents

Let \(P\) represent the dominant allele (purple) and \(p\) represent the recessive allele (white). The parents are heterozygous, so their genotypes are \(Pp\).

Step2: Create a Punnett square

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

Step3: Analyze the genotypes in the Punnett square

• \(PP\) (purple): \(1\)
• \(Pp\) (purple): \(2\)
• \(pp\) (white): \(1\)
• Total offspring: \(4\)
• Purple - flowered offspring: \(PP + Pp=1 + 2=3\)

Answer:

C. \(3:4\)