Bateson and Punnet discovred the phenomenon which is exception of Mendel's

Options

A. Unit factors in pairs
B. Dominance and recessive
C. Segregation of unit factors
D. Independent assortment.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the phenomenon discovered by Bateson and Punnett that is an exception to Mendel's principles of inheritance.

2. **Reviewing Mendel's Principles**: Mendel's principles include:
- The Law of Segregation: Each individual has two alleles for each trait, which segregate during gamete formation.
- The Law of Independent Assortment: Genes for different traits are inherited independently of each other.

3. **Identifying Bateson and Punnett's Contribution**: Bateson and Punnett conducted experiments that led to the discovery of exceptions to Mendelian genetics, particularly regarding the inheritance patterns of certain traits.

4. **Recognizing the Phenomenon**: The phenomenon that Bateson and Punnett discovered is related to the segregation of unit factors. This means that traits can be inherited together rather than independently, which is contrary to Mendel's Law of Independent Assortment.

5. **Evaluating the Options**: The options provided are:
- A) Unit factors in pairs
- B) Dominance and recessive
- C) Segregation of unit factors
- D) Independent assortment

Among these, option C, "Segregation of unit factors," aligns with the findings of Bateson and Punnett.

6. **Conclusion**: Therefore, the correct answer is option C: Segregation of unit factors.

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