Question

question 9
10 points save answer
mendel crossed a homozygous dominant purple flower pea plant with a homozygous recessive white flower plant.
what is the expected phenotypic ratio in the f1 plants?
25% purple / 75% white
75% purple / 25% white
100% purple / 0% white
50% purple / 50% white

Explanation:

Step1: Determine the genotypes of parents

Let \( P \) represent the dominant allele (purple) and \( p \) represent the recessive allele (white). The homozygous dominant parent has genotype \( PP \), and the homozygous recessive parent has genotype \( pp \).

Step2: Perform the cross

Using the Punnett - square method for \( PP\times pp \):

Gametes of \( PP \)	Gametes of \( pp \)
\( P \)	\( p \)

The offspring genotypes are all \( Pp \).

Step3: Determine the phenotype

Since \( P \) is dominant over \( p \), all \( Pp \) individuals will have the purple - flower phenotype.

Answer:

100% purple / 0% white