Even harmful mutations do not get eliminated from gene pool due to

Options

A. Genetic drift
B. Gigher frequency due to doninant nature
C. Being recessive and perisiting in heterozygous condition
D. Survival value

Answer

### Step-by-Step Solution:

1. **Understanding the Gene Pool**:
- The gene pool refers to the total collection of genes and their variants (alleles) within a population. It encompasses all the genetic information available for a particular species.

2. **Identifying Harmful Mutations**:
- Harmful mutations are changes in the DNA that can lead to diseases or disorders. An example of a harmful mutation is Haemophilia, which is an X-linked recessive disorder.

3. **Explaining Haemophilia**:
- Haemophilia is characterized by a deficiency in clotting factor VIII, leading to excessive bleeding. It is inherited through the X chromosome, which means that males (who have one X and one Y chromosome) are more likely to express the disorder if they inherit the affected X chromosome.

4. **Recessive Nature of the Mutation**:
- Since Haemophilia is recessive, a female with one affected X chromosome (heterozygous condition) will not show symptoms of the disorder but can still pass the affected allele to her offspring. This means that the mutation can persist in the population without being eliminated.

5. **Heterozygous Condition**:
- In females, having two X chromosomes means that if one is affected (X^h) and the other is normal (X^H), the female will be a carrier (X^H X^h) and will not exhibit the disease. This carrier state allows the harmful mutation to continue being passed on to future generations.

6. **Conclusion**:
- Harmful mutations do not get eliminated from the gene pool primarily because they can remain hidden in heterozygous carriers (especially in recessive conditions) and continue to be passed down through generations.

### Final Answer:
Harmful mutations do not get eliminated from the gene pool due to being recessive and persisting in heterozygous condition.

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