The effect of today's radioactive fallout will probably be more harmful to children of futrure generation than to present day children because

Options

A. infants are more susceptible to radiations
B. susceptibility to radiations increase with age
C. mutated genes are usually recessive
D. all of these.

Explanation

To solve the question regarding the harmful effects of today's radioactive fallout on future generations compared to present-day children, we can break down the reasoning into clear steps:

### Step-by-Step Solution:

1. **Understanding Radioactive Fallout**:
- Radioactive fallout refers to the residual radioactive material that is propelled into the upper atmosphere following a nuclear explosion or accident and falls back to Earth. It can have immediate and long-term effects on health.

2. **Immediate Effects on Present-Day Children**:
- Present-day children may experience immediate health effects from exposure to radioactive materials, such as cell death and tissue damage. However, these effects can vary based on the level of exposure and individual susceptibility.

3. **Long-Term Effects and Genetic Mutations**:
- One of the significant long-term effects of radioactive fallout is the potential for genetic mutations. These mutations can occur in the DNA of living cells and may not manifest immediately.

4. **Recessive Mutated Genes**:
- Mutated genes caused by radiation are often recessive. This means that for these mutations to express themselves in an individual, they must be inherited from both parents. If a child inherits one normal gene and one mutated gene, the normal gene will typically dominate, and the mutation will not be expressed.

5. **Increased Susceptibility in Future Generations**:
- Future generations may inherit these recessive mutated genes without any immediate visible effects. As these children grow and reproduce, the likelihood of these recessive mutations being expressed increases, especially if both parents carry the mutated gene.

6. **Conclusion**:
- Therefore, the cumulative effect of these recessive mutations could lead to more significant health issues in future generations compared to present-day children. This is why the statement in the question holds true.

### Final Answer:
The effect of today's radioactive fallout will probably be more harmful to children of future generations than to present-day children because **mutated genes are usually recessive** (Option C).

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