In hybridization `"Tt" xx "tt"` gives rise to the progeny in the ratio ?

Options

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

Answer

To solve the problem of hybridization between "Tt" and "tt", we can follow these steps:

### Step 1: Identify the Genotypes
- We have two parents: one is heterozygous "Tt" and the other is homozygous recessive "tt".

### Step 2: Determine the Gametes
- The gametes produced by the "Tt" parent can be "T" and "t".
- The gametes produced by the "tt" parent can only be "t".

### Step 3: Set Up a Punnett Square
- Create a Punnett square to visualize the possible combinations of the gametes from both parents.

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

### Step 4: Analyze the Offspring
- From the Punnett square, we can see the possible genotypes of the offspring:
- 2 offspring with genotype "Tt" (heterozygous)
- 2 offspring with genotype "tt" (homozygous recessive)

### Step 5: Calculate the Ratio
- The ratio of the offspring is:
- 2 "Tt" : 2 "tt" which simplifies to 1:1.

### Conclusion
- Therefore, the progeny from the hybridization "Tt" x "tt" will be in the ratio of **1:1**.

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