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 statements is accurate about nondisjunction and aneuploidies?

Aneuploidies are always beneficial to the organism.

Nondisjunction results in the correct number of chromosomes in gametes.

Nondisjunction during meiosis can lead to aneuploidies, such as Down syndrome.

Aneuploidies occur only during mitosis and do not affect meiosis.

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Verified step by step guidance

Understand the concept of nondisjunction: Nondisjunction is an error in cell division where chromosomes fail to separate properly during meiosis or mitosis, leading to gametes with an abnormal number of chromosomes.

Define aneuploidy: Aneuploidy is a condition where the number of chromosomes is not the typical set for the species, often resulting from nondisjunction. It can lead to disorders such as Down syndrome, which is caused by an extra chromosome 21.

Evaluate the statement 'Aneuploidies are always beneficial to the organism': This statement is incorrect because aneuploidies often result in developmental disorders or diseases, rather than being beneficial.

Evaluate the statement 'Nondisjunction results in the correct number of chromosomes in gametes': This statement is incorrect because nondisjunction leads to an incorrect number of chromosomes, causing aneuploidies.

Evaluate the statement 'Aneuploidies occur only during mitosis and do not affect meiosis': This statement is incorrect because aneuploidies can occur during both mitosis and meiosis, affecting the resulting cells or gametes.