Question

if a plant with purple petals (pp) is crossed with a plant with white petals (pp), what is the phenotype for the f₁ generation?
○ purple petals
○ white petals
○ a combination of purple and white petals
done

Explanation:

Step1: Analyze Genotypes

The parent with purple petals has genotype \( PP \), so it can only produce gametes with \( P \). The parent with white petals has genotype \( pp \), so it can only produce gametes with \( p \).

Step2: Determine F₁ Genotype

When these gametes combine, all \( F_1 \) offspring will have the genotype \( Pp \).

Step3: Determine Phenotype

In Mendelian genetics, if \( P \) is dominant over \( p \), the presence of one dominant allele (\( P \)) in \( Pp \) will result in the purple petal phenotype (since dominant alleles mask recessive ones in complete dominance, which is typical for petal color in such problems).

Answer:

A. purple petals