If a homozygous red flowered plant is crossed with a homozygous white flowered plant, the offspring would be

Options

A. All red flowered
B. All white flowered
C. Half red flowered
D. Half white flowered

Answer

To solve the question of what the offspring would be when a homozygous red flowered plant is crossed with a homozygous white flowered plant, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Genotypes of the Parent Plants**:
- The homozygous red flowered plant can be represented as **RR** (where R is the allele for red flowers).
- The homozygous white flowered plant can be represented as **rr** (where r is the allele for white flowers).

2. **Determine the Gametes Produced by Each Parent**:
- The red flowered plant (RR) can only produce gametes with the allele **R**.
- The white flowered plant (rr) can only produce gametes with the allele **r**.

3. **Set Up a Punnett Square**:
- Create a Punnett square to visualize the possible combinations of alleles from the gametes of both parents.
- The Punnett square will have the gametes from the red flowered plant on one side and the gametes from the white flowered plant on the other side.

```
R | R
-----------------
r | Rr | Rr
-----------------
r | Rr | Rr
```

4. **Fill in the Punnett Square**:
- Each box in the Punnett square represents a possible genotype for the offspring.
- All combinations result in **Rr**, which means all offspring will be heterozygous.

5. **Determine the Phenotype of the Offspring**:
- Since R (red) is dominant over r (white), all heterozygous offspring (Rr) will express the dominant trait, which is red flowers.

6. **Conclusion**:
- Therefore, all offspring from this cross will have red flowers.

### Final Answer:
The offspring would be **all red flowered**.

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