Hybridisation between Tt `xx` tt gives rise to the progeny of ratio

Options

A. `1 : 1`
B. `1 : 2 : 1`
C. `1 : 2`
D. `4 : 1`

Explanation

To solve the problem of hybridization between Tt (tall) and tt (dwarf) plants, we will follow these steps:

### Step 1: Identify the Genotypes of Parents
The parents involved in the hybridization are:
- Parent 1: Tt (heterozygous tall)
- Parent 2: tt (homozygous dwarf)

### Step 2: Set Up the Punnett Square
We will set up a Punnett square to determine the possible genotypes of the offspring. The alleles from each parent will be placed on the top and side of the square.

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

### Step 3: Fill in the Punnett Square
Now, we will fill in the Punnett square by combining the alleles from each parent:
- The first row results in Tt (tall) and tt (dwarf).
- The second row also results in Tt (tall) and tt (dwarf).

### Step 4: Determine the Offspring Ratios
From the Punnett square, we can see the resulting genotypes:
- Tt (tall) = 2
- tt (dwarf) = 2

Thus, the ratio of tall plants to dwarf plants is:
- Tall (Tt) : Dwarf (tt) = 2 : 2

### Step 5: Simplify the Ratio
We can simplify the ratio 2:2 to 1:1.

### Final Answer
The progeny ratio from the hybridization between Tt and tt is **1:1**.

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