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A spermatogonial cell undergoes mitosis before entering the meiotic cell cycle en route to the production of sperm. However, during mitosis the cytoplasm fails to divide, and only one daughter cell is produced. A resultant sperm eventually fertilizes a normal ovum. What is the chromosomal complement of the embryo?

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Human Heredity: Principles and Iss...

11th Edition
Michael Cummings
Publisher: Cengage Learning
ISBN: 9781305251052

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BuyFindarrow_forward

Human Heredity: Principles and Iss...

11th Edition
Michael Cummings
Publisher: Cengage Learning
ISBN: 9781305251052
Chapter 6, Problem 11QP
Textbook Problem
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A spermatogonial cell undergoes mitosis before entering the meiotic cell cycle en route to the production of sperm. However, during mitosis the cytoplasm fails to divide, and only one daughter cell is produced. A resultant sperm eventually fertilizes a normal ovum. What is the chromosomal complement of the embryo?

Summary Introduction

To describe: The ploidy of embryo fertilized with abnormal sperm.

Introduction: Meiosis and mitosis are two types of cell division occurring in different kinds of species. Mitosis produces the same or exact copy of cells. In meiosis, the haploid cells are produced. Meiosis occurs in gametic cells whereas mitosis occurs in normal cells.

Explanation of Solution

According to the question, the cytokinesis fails before the cell enters the meiotic phase. During mitosis, the chromosome numbers are doubled from 46 to 92 which remain 92 in daughter cells due to the failure of cytokinesis. When the cell enters the meiotic phase, the chromatids are reduced to produce haploids...

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