X-linked recessive gene easily express in :-

Options

A. male
B. female
C. equal in male and female
D. not easily express

Answer

To solve the question "X-linked recessive gene easily express in:", we can follow these steps:

### Step-by-Step Solution:

1. **Understand X-linked Inheritance**:
- X-linked genes are located on the X chromosome. In humans, females have two X chromosomes (XX), while males have one X and one Y chromosome (XY).

2. **Identify the Nature of X-linked Recessive Genes**:
- An X-linked recessive gene will express its trait if it is present in a homozygous condition in females (meaning both X chromosomes carry the recessive allele). In contrast, males only need one copy of the recessive allele (on their single X chromosome) to express the trait.

3. **Analyze the Expression in Males and Females**:
- In females (XX), a recessive trait will only be expressed if both X chromosomes carry the recessive allele. This means females can be carriers (having one recessive allele and one dominant allele) without expressing the trait.
- In males (XY), the presence of a single recessive allele on the X chromosome will result in the expression of the trait, as there is no corresponding allele on the Y chromosome to mask it.

4. **Conclusion**:
- Since males only need one copy of the recessive allele to express the trait, X-linked recessive genes are more easily expressed in males than in females.

5. **Final Answer**:
- Therefore, the correct answer to the question is that X-linked recessive genes easily express in **males**.