Chromosomes other than sex chromosomes are called

Options

A. Allosomoes
B. Autosomes
C. Lampbrush chromosomes
D. Hetersomoes

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the term used to describe chromosomes that are not sex chromosomes.

2. **Identifying the Options**: The options given are:
- 1st: Allosomes
- 2nd: Autosomes
- 3rd: Lambrush chromosomes
- 4th: Heterosomes

3. **Analyzing Each Option**:
- **Allosomes**: These are actually the sex chromosomes. They differ from autosomes in size and behavior and are involved in determining the sex of an individual. Thus, this option is incorrect.

- **Autosomes**: These are chromosomes that are not involved in sex determination. They perform all other functions in the organism. This option fits the definition of chromosomes other than sex chromosomes, making it the correct answer.

- **Lambrush Chromosomes**: These are specialized forms of chromosomes found in the growing oocyte (immature egg) of many animals, but they are not relevant to the question about sex chromosomes. Therefore, this option is incorrect.

- **Heterosomes**: This term refers to chromosomes that determine the sex in some organisms. Since they are sex chromosomes, this option is also incorrect.

4. **Conclusion**: After analyzing all the options, the correct answer is **Autosomes**, which are chromosomes other than sex chromosomes.

**Final Answer**: Chromosomes other than sex chromosomes are called **Autosomes**.

---