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

27. The Reproductive System

Meiosis

Anatomy & Physiology

27. The Reproductive System

Meiosis

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Multiple Choice

Which of the following events occurs during Anaphase I of meiosis?

Chromosomes line up at the metaphase plate.

Sister chromatids are separated and move to opposite poles.

Homologous chromosomes are pulled to opposite poles of the cell.

The nuclear envelope re-forms around each set of chromosomes.

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Verified step by step guidance

Understand the stages of meiosis: Meiosis consists of two main stages, Meiosis I and Meiosis II, each with their own sub-stages: prophase, metaphase, anaphase, and telophase.

Focus on Anaphase I: During Anaphase I of meiosis, homologous chromosomes, which are pairs of chromosomes containing the same genes but possibly different alleles, are separated.

Differentiate between homologous chromosomes and sister chromatids: In Anaphase I, it is the homologous chromosomes that are pulled apart, not the sister chromatids. Sister chromatids are separated during Anaphase II.

Identify the movement of chromosomes: In Anaphase I, the homologous chromosomes are pulled to opposite poles of the cell by the spindle fibers, which is a key event in reducing the chromosome number by half.

Clarify the incorrect options: Chromosomes lining up at the metaphase plate occurs during Metaphase I, and the nuclear envelope re-forming happens during Telophase I, not Anaphase I.