What type of Cell Division occurs in Reproductive Cells?

Appeared in: MP CHO-2020

Explanation

Meiosis is the specialized two-stage process of cell division that produces reproductive cells (gametes), such as sperm and egg cells.
The primary purpose of meiosis is to reduce the number of chromosomes from diploid (46 in humans) to haploid (23).
This reduction is essential for sexual reproduction, ensuring that when a sperm and egg fuse during fertilization, the resulting zygote has the correct diploid number of chromosomes.
Meiosis also introduces genetic variation through a process called crossing over, where homologous chromosomes exchange genetic material.

Option A: Mitosis is the process of cell division for somatic (body) cells, not reproductive cells. It results in two identical daughter cells with the same number of chromosomes as the parent cell.
Option C: While meiosis is a form of cell division, this option is too general. The question asks for the specific type of division that occurs in reproductive cells.
Option D: This is incorrect because mitosis and meiosis are distinct processes that occur in different types of cells and have different outcomes. Reproductive cells undergo meiosis, not mitosis.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Types of cell division in human cells as background academic context rather than a clinical decision trigger.
Understanding the difference between mitosis and meiosis is crucial for grasping the basis of heredity and genetic disorders.
Errors in meiosis, specifically nondisjunction, are a major cause of miscarriages and congenital conditions like Down syndrome (Trisomy 21), Patau syndrome (Trisomy 13), and Edwards syndrome (Trisomy 18).
Nurses may be involved in genetic counseling and patient education regarding prenatal screening tests that detect chromosomal abnormalities arising from meiotic errors.

How to Approach the Question

First, identify the key terms in the question: 'type of Cell Division' and 'Reproductive Cells'.
Recall the two primary types of cell division in humans: mitosis and meiosis.
Differentiate their main functions. Mitosis is for the growth and repair of general body (somatic) cells. Meiosis is specifically for producing sex cells (gametes/reproductive cells).
Directly link the term 'Reproductive Cells' to its corresponding process, which is Meiosis.
Evaluate the other options. 'Mitosis' is incorrect because it applies to somatic cells. 'Cell division' is a general category, not the specific type requested. 'All of these' is incorrect because mitosis is not involved in producing reproductive cells.

Concept Tested & Keywords

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E6 Physiology Ganong 27e Vol 2 Part 2 p. 128-130

E6 Anatomy Applied Ashalatha 4e p. 64-66

E6 Anatomy Grays 43e Vol 1 Part 1 p. 47-49

Practise the full MP CHO-2020

Attempt every question from this paper in a timed mock, then review the full solution for each one.