The chromosomes other than sex chromosomes are called

Options

A. Autosomes
B. Heterosomes
C. Karyosomes
D. None of the above

Answer

To answer the question "The chromosomes other than sex chromosomes are called," we need to analyze the options provided and determine which one correctly identifies these chromosomes.

### Step-by-Step Solution:

1. **Understanding Chromosomes**:
- Chromosomes are structures within cells that contain DNA. They are crucial for genetic inheritance.

2. **Identifying Sex Chromosomes**:
- Sex chromosomes are involved in determining the sex of an organism. In humans, these are the X and Y chromosomes.

3. **Defining Autosomes**:
- Autosomes are chromosomes that are not involved in determining sex. In humans, there are 22 pairs of autosomes (44 chromosomes) and 1 pair of sex chromosomes (2 chromosomes).

4. **Evaluating the Options**:
- **Option 1: Autosomes**: This is the correct term for chromosomes that are not sex chromosomes.
- **Option 2: Heterosomes**: This term refers to sex chromosomes, making it an incorrect option.
- **Option 3: Karyosomes**: This term refers to chromatin material within the nucleus during cell division, which is also incorrect.
- **Option 4: None of the above**: Since we have identified the correct term, this option is incorrect.

5. **Conclusion**:
- The correct answer is **autosomes**, as they are defined as chromosomes other than sex chromosomes.

### Final Answer:
The chromosomes other than sex chromosomes are called **autosomes**.

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