Question

yellow seeds (y) are dominant to green seeds (y) and purple flowers (p) are dominant to white flowers (p). cross two true - breeding plants - one with purple flowers and yellow seeds and the other with green seeds and white flowers.
questions:

1. list the gametes which can be produced by each plant.
2. write the gametes for one parent across the top, and the gametes for the other parent along the side.
3. complete the punnett square and drag the genotype of each of the offspring to that box.

cross 1: two true - breeding plants

Explanation:

Step1: Determine parent genotypes

True - breeding purple - flowered and yellow - seeded plant has genotype PPYY. True - breeding green - seeded and white - flowered plant has genotype ppyy.

Step2: Find gametes of parents

The PPYY plant can only produce PY gametes. The ppyy plant can only produce py gametes.

Step3: Set up Punnett - square

When we set up the Punnett - square with PY gametes across the top and py gametes along the side, all of the offspring will have the genotype PpYy.

Answer:

All offspring have genotype PpYy.