Hybrid of pure red flowered and white flowered Pea is crossed to pure red flowered plant. The progeny shall be

Options

A. White flowered
B. Red flowered
C. Both red and white flowered plants
D. Mostly red flowered plants.

Answer

To solve the question regarding the hybridization of pure red-flowered and white-flowered pea plants, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Parental Plants**:
- We have two types of parental plants:
- Pure red-flowered plant (RR)
- Pure white-flowered plant (rr)

2. **Determine the F1 Generation**:
- When we cross a pure red-flowered plant (RR) with a pure white-flowered plant (rr), all offspring in the F1 generation will be heterozygous (Rr) and exhibit the dominant trait, which is red flowers.
- Therefore, the F1 generation consists of all red-flowered plants.

3. **Cross the F1 Generation with a Pure Red Flowered Plant**:
- Now, we take the F1 hybrid (Rr) and cross it with another pure red-flowered plant (RR).
- The possible gametes from the F1 hybrid (Rr) are R and r, while the pure red-flowered plant (RR) can only produce R gametes.

4. **Punnett Square Analysis**:
- We can set up a Punnett square to visualize the cross:
- Parent 1 (Rr): R | r
- Parent 2 (RR): R | R

| | R | R |
|---|---|---|
| R | RR | RR |
| r | Rr | Rr |

5. **Analyze the Progeny**:
- From the Punnett square, we see the following genotypes:
- 2 RR (homozygous red)
- 2 Rr (heterozygous red)
- All progeny will exhibit the red flower phenotype since both RR and Rr result in red flowers.

6. **Conclusion**:
- The progeny of the cross between the F1 hybrid (Rr) and the pure red-flowered plant (RR) will be 100% red-flowered plants.

### Final Answer:
The progeny shall be all red-flowered plants.

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