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

Anatomy of the Male Reproductive System

Anatomy & Physiology

27. The Reproductive System

Anatomy of the Male Reproductive System

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2:42 minutes

Problem 2

Textbook Question

Relative to differences between mitosis and meiosis, choose the statements that apply only to events of meiosis:
a. Tetrads present
b. Produces two daughter cells
c. Produces four daughter cells
d. Occurs throughout life
e. Reduces the chromosomal number by half
f. Synapsis and crossing over of homologous occur

Verified step by step guidance

Step 1: Understand the key differences between mitosis and meiosis. Mitosis is a process of cell division that results in two genetically identical daughter cells, while meiosis is a specialized form of cell division that produces gametes (sperm and egg cells) with half the chromosomal number of the parent cell.

Step 2: Analyze each statement provided in the problem to determine whether it applies specifically to meiosis. For example, 'Tetrads present' refers to the pairing of homologous chromosomes during prophase I of meiosis, which does not occur in mitosis.

Step 3: Evaluate the statement 'Produces two daughter cells.' This applies to mitosis, not meiosis, because meiosis produces four daughter cells after two rounds of division (meiosis I and meiosis II).

Step 4: Consider the statement 'Reduces the chromosomal number by half.' This is a hallmark of meiosis, as it ensures that gametes have half the chromosomal number of somatic cells, which is restored upon fertilization.

Step 5: Examine the statement 'Synapsis and crossing over of homologous occur.' This is unique to meiosis and occurs during prophase I, where homologous chromosomes pair up and exchange genetic material, increasing genetic diversity.

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Key Concepts

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

Mitosis vs. Meiosis

Mitosis and meiosis are two types of cell division. Mitosis results in two genetically identical daughter cells, while meiosis produces four genetically diverse daughter cells with half the chromosome number. Understanding these processes is crucial for distinguishing the specific events that occur during meiosis, such as the formation of tetrads and crossing over.

Tetrads and Synapsis

During meiosis, homologous chromosomes pair up to form structures called tetrads in a process known as synapsis. This pairing allows for genetic recombination through crossing over, which increases genetic diversity. Tetrads are unique to meiosis and do not occur in mitosis, making them a key feature of meiotic events.

Reduction Division

Meiosis includes two rounds of division, resulting in a reduction of the chromosome number by half. This reduction division is essential for sexual reproduction, ensuring that offspring have the correct diploid number when gametes fuse. This concept is fundamental to understanding why certain statements apply exclusively to meiosis.

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