SAT chromosome has :-

Options

A. More heterochromatin part
B. More A= T part
C. More non histone protein
D. More lipid

Answer

To answer the question about SAT chromosomes, let's break down the information step by step:

### Step-by-Step Solution:

1. **Understanding SAT Chromosomes**: SAT chromosomes, also known as satellite chromosomes, are specific types of chromosomes that have a distinct structure. They are characterized by a segment that is separated from the main body of the chromosome.

**Hint**: Remember that SAT chromosomes are not just any chromosomes; they have a unique structural feature.

2. **Heterochromatin Presence**: SAT chromosomes contain a significant amount of heterochromatin. Heterochromatin is a tightly packed form of DNA that is generally transcriptionally inactive. This characteristic is crucial for the function of SAT chromosomes.

**Hint**: Think about the role of heterochromatin in gene expression and chromosome structure.

3. **Secondary Constriction**: The segment of the SAT chromosome is separated from the main body by a secondary constriction. This constriction is important for the attachment of the satellite to the main chromosome.

**Hint**: Visualize the structure of a chromosome and where the constriction occurs.

4. **Nucleolus Organizer Region (NOR)**: If the secondary constriction contains the nucleolus organizer region, the chromosome is referred to as a nucleolus satellite chromosome. This region is essential for the formation of the nucleolus during cell division.

**Hint**: Consider the relationship between chromosome structure and cellular functions like nucleolus formation.

5. **Presence in Diploid Nucleus**: Typically, there are at least two satellite chromosomes present in each diploid nucleus, playing a vital role in the formation of the nucleolus after cell division.

**Hint**: Recall the significance of diploid cells and their chromosome count.

6. **Conclusion**: Based on the above points, the correct answer to the question "SAT chromosome has" is that it has "more heterochromatin part." The other options, such as more adenine to thymine part, more non-histone protein, and more lipid, are incorrect.

**Hint**: Focus on the defining characteristics of SAT chromosomes to differentiate them from other types.

### Final Answer:
SAT chromosomes have more heterochromatin part.