ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
3rd Edition
ISBN: 9780135964422
Author: Urry
Publisher: PEARSON
bartleby

Videos

Textbook Question
Book Icon
Chapter 10, Problem 1TYU

A human cell containing 22 autosomes and a Y chromosome is

  1. A.    a sperm.
  2. B.     an egg.
  3. C.     a zygote.
  4. D.    a somatic cell of a male.
Expert Solution & Answer
Check Mark
Summary Introduction

Introduction:

The cell is the basic unit of life. Each cell of human contains 23 pairs of chromosome, in which 22 pairs are autosomes and 1 pair is sex chromosome (XX for females and XY for males). The male gamete is called sperm and a female gamete is called an egg or ovum. These gametes are haploid in nature.

Answer to Problem 1TYU

Correct answer:

A human cell containing 22 autosomes and a Y chromosome is the sperm cell (the reproductive cell present in males). Therefore, option (A) is correct.

Explanation of Solution

Reasons for the correct statement:

There are 2 types of cells found in the human body, one is the somatic cells and the other is the germ cells. The somatic cells make up the entire body, while the germ cells are responsible for reproduction. The sperm cell of a human contains 22 autosomes and either X or Y chromosome.

Option (A) is given as “a sperm”.

“As the sperm contains the sex-determining chromosomes, the total chromosomes present in sperm cell are 22 autosomes and a Y or X chromosome”. Therefore, it is the right answer.

Hence, option (A) is correct.

Reasons for the incorrect statements:

Option (B) is given as “an egg”.

The egg is a germ cell (a gamete) present in females, and it contains only one X-chromosome along with 22 autosomes. Therefore, it is the wrong answer.

Option (C) is given as “a zygote”.

A zygote is the result of fertilization between male and female gametes, which contains 22 pairs of autosomes and 2 sex chromosomes. Therefore, it is the wrong answer.

Option (D) is given as “a somatic cell of a male”.

The somatic cells are diploid in nature. Somatic cells are body cells containing 23 pairs of autosomes. Therefore, it is the wrong answer.

Hence, options (B), (C), and (D) are incorrect.

Conclusion

Sperms are the reproductive cells present in males. The human sperm cell contains 22 autosomes and a Y chromosome.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
In comparing somatic cells and gametes, somatic cells are a. diploid with half the number of chromosomes. b. haploid with half the number of chromosomes. c. diploid with twice the number of chromosomes. d. haploid with twice the number of chromosomes.
Which types of microtubules are essential for the major events occurring during anaphase B ? A. Inter-polar and astral.B. Kinetochore and astral.C. Astral only.D. Kinetochore and inter-polar.E. Kinetochore only.
Describe the role of the following structures or proteins in cell division: a. microtubules b. cohesin protein c. kinetochores d. synaptonemal complex
Knowledge Booster
Background pattern image
Biology
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Text book image
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Text book image
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Text book image
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Text book image
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Text book image
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
Embryology | Fertilization, Cleavage, Blastulation; Author: Ninja Nerd;https://www.youtube.com/watch?v=8-KF0rnhKTU;License: Standard YouTube License, CC-BY