If a plant is heterozygous tall and produced tall as well as dwarf in `F_(2)` generation it represents the law of

Options

A. Dominance
B. Purity of gametes
C. Independent assortment
D. Free recombination

Answer

To solve the question, "If a plant is heterozygous tall and produced tall as well as dwarf in the F2 generation, it represents the law of...", we will analyze the information step by step.

### Step-by-Step Solution:

1. **Understanding Heterozygous Tall Plant**:
- A heterozygous tall plant has one dominant allele (T) for tallness and one recessive allele (t) for dwarfness. This can be represented as Tt.

2. **F2 Generation**:
- When a heterozygous tall plant (Tt) is crossed with another heterozygous tall plant (Tt), the F2 generation will exhibit a phenotypic ratio of 3:1. This means that out of four offspring, three are expected to be tall (TT or Tt) and one is expected to be dwarf (tt).

3. **Mendel’s Laws**:
- Mendel proposed several laws of inheritance. The relevant ones for this question are:
- **Law of Dominance**: In a pair of contrasting traits, one trait (dominant) will mask the other (recessive).
- **Purity of Gametes**: Each gamete carries only one allele for each gene.
- **Independent Assortment**: Genes for different traits segregate independently during gamete formation.
- **Free Recombination**: New combinations of traits can appear in offspring.

4. **Identifying the Correct Law**:
- Since the question states that a heterozygous tall plant produces both tall and dwarf offspring in the F2 generation, this indicates that the alleles segregate during gamete formation.
- The presence of both tall and dwarf plants in the F2 generation specifically illustrates the **purity of gametes** law, as it shows that the gametes carry only one allele for the height trait.

5. **Conclusion**:
- Therefore, the correct answer to the question is that it represents the **law of purity of gametes**.

### Final Answer:
The law represented by a heterozygous tall plant producing both tall and dwarf offspring in the F2 generation is the **law of purity of gametes**.

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