To determine which offspring will be homozygous dominant for the trait of pod seed type, we need to analyze the possible genetic combinations given by the Punnett square. Let's go through the steps to identify the homozygous dominant offspring.
### Step 1: Understanding the Alleles
In this scenario:
- The allele \( I \) represents the dominant allele for inflated pod seeds.
- The allele \( i \) represents the recessive allele for constricted pod seeds.
### Step 2: Set up the Punnett Square
The Punnett square provided shows a cross between two pea plants with the following alleles:
1. One parent has the genotype \( Ii \) (where \( I \) is the dominant allele and \( i \) is the recessive allele).
2. The other parent has the genotype either \( II \) (homozygous dominant) or \( Ii \) (heterozygous).
To complete the Punnett square:
| | I | i |
|---|---|---|
| I | II| Ii|
| i | Ii| ii|
Each box within the square represents a potential genotype for the offspring. The combinations are:
- \( II \) in the top left cell, representing a homozygous dominant genotype.
- \( Ii \) in the top right and bottom left cells, representing heterozygous genotypes.
- \( ii \) in the bottom right cell, representing a homozygous recessive genotype.
### Step 3: Identify Homozygous Dominant Offspring
We are specifically looking for offspring that are homozygous dominant, which means they must have two dominant alleles (\( II \)).
From the completed Punnett square, we see that there is only one combination that results in \( II \), which is in the top-left cell.
### Conclusion
Based on the analysis, the only homozygous dominant offspring from this cross are those represented by the genotype [tex]\( II \)[/tex]. Therefore, the homozygous dominant offspring will be the ones with the genotype [tex]\( II \)[/tex].
