A white pea plant is crossed a heterozygous violet pea plant. What will be characteristic of offspring .

Options

A. 75% recessive
B. 50% recessive
C. 25% recessive
D. All dominant

Answer

To solve the question about the offspring characteristics from crossing a white pea plant with a heterozygous violet pea plant, we can follow these steps:

### Step 1: Identify the Genotypes
- The white pea plant is homozygous recessive, which we can denote as **ww** (where 'w' represents the recessive allele for white flowers).
- The heterozygous violet pea plant has one dominant allele and one recessive allele, which we can denote as **Ww** (where 'W' represents the dominant allele for violet flowers).

### Step 2: Determine the Gametes
- The white pea plant (ww) can only produce one type of gamete: **w**.
- The heterozygous violet pea plant (Ww) can produce two types of gametes: **W** and **w**.

### Step 3: Set Up the Punnett Square
- We can set up a Punnett square to visualize the possible combinations of alleles from the gametes of the two parent plants.

```
W w
----------------
w | Ww | ww |
----------------
```

### Step 4: Analyze the Offspring Genotypes
- From the Punnett square, we can see the possible genotypes of the offspring:
- **Ww** (violet flower) - 1 occurrence
- **ww** (white flower) - 1 occurrence

### Step 5: Calculate the Ratios
- The ratio of the offspring is:
- 1 violet flower (Ww) : 1 white flower (ww)
- This can be simplified to:
- 50% violet (Ww)
- 50% white (ww)

### Conclusion
The characteristics of the offspring from the cross between a white pea plant and a heterozygous violet pea plant will be:
- 50% of the offspring will have violet flowers (Ww).
- 50% of the offspring will have white flowers (ww).

### Final Answer
The correct answer is that 50% of the offspring will exhibit the recessive trait (white flowers).

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