Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

3. Energy & Cell Processes

Organization of DNA in the Cell

Anatomy & Physiology

3. Energy & Cell Processes

Organization of DNA in the Cell

Previous problemNext problem

Problem 4

Textbook Question

The centromere is a region at which .a. sister chromatids are attached to each other;b. metaphase chromosomes align;c. the tips of chromosomes are found;d. the nucleus is located

Verified step by step guidance

Identify the function of the centromere in cell division.

Understand that sister chromatids are the duplicated forms of a chromosome connected together.

Recognize that the centromere is the specific part of a chromosome where these sister chromatids are joined.

Evaluate the options given in the question to determine which one correctly describes the role of the centromere.

Select the option that states the centromere is where sister chromatids are attached to each other.

Was this helpful?

Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Centromere Function

The centromere is a specialized region of a chromosome that plays a crucial role during cell division. It is the point where sister chromatids are held together, ensuring proper segregation into daughter cells. This attachment is vital for maintaining genetic stability and preventing aneuploidy.

Sister Chromatids

Sister chromatids are identical copies of a chromosome that are formed during DNA replication. They are joined at the centromere and are separated during mitosis or meiosis to ensure that each new cell receives an exact copy of the genetic material. Understanding their structure and behavior is essential for grasping the mechanics of cell division.

Metaphase Alignment

During metaphase, chromosomes align at the cell's equatorial plane, facilitated by the spindle apparatus. This alignment is critical for ensuring that sister chromatids are evenly distributed to the daughter cells. The centromere's role in this process is to anchor the chromatids to the spindle fibers, allowing for accurate separation.