If a homozygous tall plant is crossed with homozygous dwarf plant, the off spring will be

Options

A. All tall plants
B. Half tall plants
C. Half dwarf plants
D. All dwarf plants

Answer

To solve the question, we need to analyze the genetic cross between a homozygous tall plant and a homozygous dwarf plant. Let's break it down step by step.

### Step 1: Identify the Genotypes of the Parents
- The homozygous tall plant has the genotype **TT** (where "T" represents the tall allele).
- The homozygous dwarf plant has the genotype **tt** (where "t" represents the dwarf allele).

### Step 2: Determine the Gametes Produced by Each Parent
- The tall plant (TT) can only produce gametes with the allele **T**.
- The dwarf plant (tt) can only produce gametes with the allele **t**.

### Step 3: Set Up the Punnett Square
We can set up a Punnett square to visualize the possible offspring from this cross:

```
T | T
---------------------
t | Tt | Tt
---------------------
t | Tt | Tt
```

### Step 4: Analyze the Offspring Genotypes
From the Punnett square, we see that all offspring will have the genotype **Tt**.

### Step 5: Determine the Phenotype of the Offspring
Since **T** (tall) is dominant over **t** (dwarf), all offspring with the genotype **Tt** will exhibit the tall phenotype.

### Conclusion
Thus, when a homozygous tall plant is crossed with a homozygous dwarf plant, all the offspring will be tall.

### Final Answer
The offspring will be **all tall plants**.

---