Beadle and Tatum showed that each kind of mutant bread mould they studied lacked a specific enzyme.Their experiments demonstrated that

Options

A. Cell need specific enzymes in order to function
B. Genes are made of DNA
C. Genes carry information for making proteins
D. Enzymes are required to repair damaged DNA information .

Answer

**Step-by-Step Solution:**

1. **Introduction to Beadle and Tatum's Work:**
- Beadle and Tatum conducted experiments on the bread mold Neurospora crassa.
- They studied various mutant strains of this mold to understand the relationship between genes and enzymes.

2. **Identifying the Mutant Strains:**
- Each mutant strain of Neurospora crassa was found to lack a specific enzyme.
- This led to the conclusion that each mutant strain had a defect in a particular gene.

3. **Linking Genes to Enzymes:**
- Beadle and Tatum concluded that one defective gene corresponds to one defective enzyme.
- This means that each gene is responsible for producing a specific enzyme that is crucial for certain metabolic pathways.

4. **Proposing the One Gene-One Enzyme Hypothesis:**
- Their experiments led to the formulation of the "One Gene-One Enzyme" hypothesis.
- This hypothesis states that each gene encodes the information needed to produce a specific enzyme.

5. **Conclusion:**
- The key takeaway from Beadle and Tatum's experiments is that genes carry the information necessary for the synthesis of proteins (including enzymes).
- Therefore, the correct answer to the question is that their experiments demonstrated that "genes carry information for making proteins."

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