Table of contents

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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

29. Heredity

Overview of Human Genetics

Anatomy & Physiology

29. Heredity

Overview of Human Genetics

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Multiple Choice

How many chromosomes are present in a normal human somatic cell?

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Understand that a somatic cell is any cell in the body that is not a sperm or egg cell. These cells are diploid, meaning they contain two sets of chromosomes, one from each parent.

Recall that in humans, the diploid number of chromosomes is 46. This includes 22 pairs of autosomes and 1 pair of sex chromosomes.

Each pair of chromosomes consists of one chromosome inherited from the mother and one from the father, making a total of 23 pairs.

The total number of chromosomes in a normal human somatic cell is calculated by multiplying the number of pairs by 2, which is 23 pairs times 2.

Verify that the total number of chromosomes in a normal human somatic cell is 46, which is the sum of 22 pairs of autosomes and 1 pair of sex chromosomes.