Sex chromosomes are also called

Options

A. allosomes
B. heterosomes
C. autosomes
D. isochromosomes

Answer

**Step-by-Step Text Solution:**

1. **Understanding Chromosomes**:
- Chromosomes are structures within cells that contain DNA. They are essential for the storage and transmission of genetic information.

2. **Types of Chromosomes**:
- There are two main types of chromosomes in humans and many other organisms:
- **Autosomes**: These are non-sex chromosomes that are the same in both males and females. In humans, there are 44 autosomes.
- **Sex Chromosomes**: These are chromosomes that determine the sex of an individual. In humans, there are two sex chromosomes.

3. **Identifying Sex Chromosomes**:
- Sex chromosomes are also known by other names. The terms used for sex chromosomes include:
- **Allosomes**: This term refers specifically to the sex chromosomes.
- **Heterosomes**: This is another term for sex chromosomes, emphasizing their role in determining sex.

4. **Excluding Incorrect Options**:
- **Isochromosomes**: These are a type of chromosomal abnormality and are not synonymous with sex chromosomes.
- **Autosomes**: As previously mentioned, these are the non-sex chromosomes and do not include sex determination.

5. **Conclusion**:
- Therefore, sex chromosomes are also called **allosomes** and **heterosomes**. The correct answers to the question are options A (Allosomes) and B (Heterosomes).