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

How might sperm be affected if nondisjunction occurs during meiosis in a male?

The sperm will be unable to fertilize an egg due to lack of genetic material.

The sperm will have increased motility, enhancing fertilization chances.

The sperm may have an abnormal number of chromosomes, leading to conditions such as Klinefelter syndrome.

The sperm will have a normal number of chromosomes, resulting in typical offspring.

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Verified step by step guidance

Understand the process of meiosis: Meiosis is a type of cell division that reduces the chromosome number by half, creating four haploid cells, each genetically distinct from the parent cell. In males, this process results in the formation of sperm cells.

Define nondisjunction: Nondisjunction is an error in meiosis where homologous chromosomes or sister chromatids fail to separate properly during cell division. This can occur during either meiosis I or meiosis II.

Analyze the impact of nondisjunction on sperm: If nondisjunction occurs, it can result in sperm cells with an abnormal number of chromosomes. This means some sperm may have an extra chromosome (n+1) or be missing a chromosome (n-1).

Consider the consequences of chromosomal abnormalities: Sperm with an abnormal number of chromosomes can lead to genetic disorders if they fertilize an egg. For example, an extra X chromosome in a sperm can result in Klinefelter syndrome (XXY) in the offspring.

Conclude the effects on fertilization: Sperm with chromosomal abnormalities due to nondisjunction may still fertilize an egg, but the resulting zygote may have genetic disorders or may not develop properly, depending on the specific chromosomal imbalance.