The phenotype of any character will not be affected if the modified allele produces-

Options

A. Normal enzyme
B. Non-functional enzyme
C. No-enzyme at all
D. 2 and 3 both

Answer

To solve the question, "The phenotype of any character will not be affected if the modified allele produces-", we can break it down into the following steps:

### Step 1: Understand the Role of Alleles
Alleles are different forms of a gene that can produce variations in a trait. The expression of these alleles leads to the phenotype, which is the observable characteristic of an organism.

**Hint:** Consider how different alleles can lead to variations in traits.

### Step 2: Identify the Impact of Modified Alleles
When an allele is modified (mutated), it can either produce a functional protein, a non-functional protein, or no protein at all. The phenotype will only remain unaffected if the modified allele still produces a functional protein that performs its normal role.

**Hint:** Think about what happens to proteins when a gene is mutated.

### Step 3: Determine the Conditions for Unaffected Phenotype
If the modified allele produces a normal or functional protein (like an enzyme or hormone), the biochemical processes and physiological traits will remain unchanged, thus keeping the phenotype the same.

**Hint:** Reflect on the relationship between protein function and phenotype.

### Step 4: Analyze the Options Provided
In the context of the question, the correct answer would be the option that states that the modified allele produces a normal functional protein. This indicates that even with a modification, the protein's function is preserved, leading to no change in phenotype.

**Hint:** Look for the option that specifies the production of a normal or functional protein.

### Conclusion
The phenotype of any character will not be affected if the modified allele produces a normal functional protein.

### Final Answer
The correct answer is: **A normal functional protein.**

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