In Pisum sativum, the pods may be green (G) or yellow (g) What proportion of the offspring in the following crosses would be expected to be homozygous green ?
(i) `Gg xxGg` , (ii) `Gg xx GG`

Explanation

To solve the problem of determining the proportion of homozygous green offspring in the given crosses of Pisum sativum (garden pea), we will analyze each cross step by step.

### Step 1: Understand the Genotypes
In Pisum sativum, the green pod color is represented by the dominant allele (G), while yellow pod color is represented by the recessive allele (g). Homozygous green would be represented as GG, and heterozygous green would be represented as Gg.

### Step 2: Analyze the First Cross (Gg x Gg)
1. **Identify the Parent Genotypes**: Both parents are heterozygous (Gg).
2. **Determine the Gametes**: Each parent can produce two types of gametes: G and g.
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