Question

which punnett square represents a cross between two parents that are heterozygous for purple flowers?
f f
f ff ff
f ff ff
f f
f ff ff

Explanation:

Step1: Analyze the genotype of heterozygous parents

Heterozygous means having two different alleles. If the allele for purple flowers is \(F\) (assuming it is dominant) and the recessive allele is \(f\), then the genotype of each heterozygous parent is \(Ff\).

Step2: Determine the gametes produced by each parent

A parent with genotype \(Ff\) can produce two types of gametes: \(F\) and \(f\).

Step3: Construct the Punnett square

In a Punnett square, we list the gametes of one parent along the top ( \(F\) and \(f\)) and the gametes of the other parent along the left - hand side ( \(F\) and \(f\)).
When we fill in the square:

• The top - left box is \(F\times F=FF\)
• The top - right box is \(F\times f = Ff\)
• The bottom - left box is \(f\times F=Ff\)
• The bottom - right box is \(f\times f = ff\)

Answer:

The first Punnett square (with \(FF\), \(Ff\), \(Ff\), \(ff\) in the boxes) represents the cross between two heterozygous (\(Ff\times Ff\)) parents.