When modified allele is equivalent to the unmodified allelel it will produce...........

Options

A. It produces normal/less efficient enzyme
B. It produces the same phenotype/trait
C. It results in the transformation of substrate
D. more than one option is true

Answer

**Step-by-Step Solution:**

1. **Understanding Alleles**: Begin by recognizing that alleles are different forms of a gene that can exist at a specific locus on a chromosome. Each organism has two alleles for each gene, one inherited from each parent.

2. **Identifying Modified and Unmodified Alleles**: In this scenario, we have a modified allele and an unmodified allele. The unmodified allele is considered the normal or wild-type allele, while the modified allele has undergone some change.

3. **Function of Alleles**: The unmodified allele typically produces a normal enzyme that is essential for a specific biochemical pathway. This enzyme catalyzes the conversion of substrates into products.

4. **Effects of Modified Alleles**: The modified allele can lead to three possible outcomes:
- It may produce a normal enzyme (functionally equivalent to the unmodified allele).
- It may produce a non-functional enzyme (which does not catalyze the reaction).
- It may result in no enzyme production at all.

5. **Phenotypic Expression**: When the modified allele produces a normal enzyme, it results in the same phenotypic expression as the unmodified allele. This means that the observable traits (phenotype) will be identical in this case.

6. **Dominance and Recessiveness**: The unmodified allele is often dominant, meaning it can mask the effects of the modified allele if the modified allele leads to a non-functional or less efficient enzyme. The modified allele, in such cases, is considered recessive.

7. **Conclusion**: Therefore, when the modified allele is functionally equivalent to the unmodified allele, it will produce a normal enzyme, leading to the same phenotypic trait as the unmodified allele.

**Final Answer**: When the modified allele is equivalent to the unmodified allele, it will produce normal enzymes.

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