Which of the statement is not applicable to mutations?

Options

A. These are discontinuous variations
B. Usually recessive
C. Usually harmful
D. Predictable

Answer

To determine which statement is not applicable to mutations, we will analyze each option provided in the question.

### Step 1: Understand the Definition of Mutations
Mutations are changes in the nucleotide sequence of DNA. They can be small or large and can occur in various forms. Understanding this definition is crucial to evaluate the statements.

**Hint:** Recall that mutations are changes in the DNA sequence that can affect an organism's traits.

### Step 2: Analyze Each Statement
1. **Discontinuous Variation**: This statement is applicable to mutations. Mutations do not occur in a continuous manner; they can appear sporadically and are not guaranteed to be passed on from one generation to the next.

**Hint:** Think about how mutations can appear suddenly and may not be present in every generation.

2. **Usually Recessive**: This statement is also applicable. While many mutations are recessive, meaning they do not manifest unless two copies are present, dominant mutations can also occur. However, the term "usually" indicates that recessive mutations are more common.

**Hint:** Consider how traits are inherited and how recessive traits can be masked by dominant ones.

3. **Usually Harmful**: This statement is applicable as well. Most mutations tend to be harmful or detrimental to the organism, although there are exceptions where mutations can be neutral or beneficial.

**Hint:** Reflect on how many mutations can lead to diseases or malfunctions in biological processes.

4. **Predictable**: This statement is **not applicable** to mutations. Mutations are random events and cannot be predicted in terms of when or how they will occur. They are directionless and unpredictable.

**Hint:** Think about the nature of mutations and how they can happen due to various environmental factors without a specific pattern.

### Step 3: Conclusion
After analyzing each statement, the one that is not applicable to mutations is **"predictable."** Mutations are random and cannot be anticipated.

**Final Answer:** The statement that is not applicable to mutations is **"predictable."**