
A human cell containing 22 autosomes and a Y chromosome is
- A. a sperm.
- B. an egg.
- C. a zygote.
- D. a somatic cell of a male.

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.
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?
Chapter 10 Solutions
Campbell Biology in Focus (2nd Edition)
Additional Science Textbook Solutions
Chemistry
Microbiology Fundamentals: A Clinical Approach
Human Physiology: An Integrated Approach (8th Edition)
Genetics: From Genes to Genomes
Campbell Essential Biology (7th Edition)
- What is this?arrow_forwardMolecular Biology A-C components of the question are corresponding to attached image labeled 1. D component of the question is corresponding to attached image labeled 2. For a eukaryotic mRNA, the sequences is as follows where AUGrepresents the start codon, the yellow is the Kozak sequence and (XXX) just represents any codonfor an amino acid (no stop codons here). G-cap and polyA tail are not shown A. How long is the peptide produced?B. What is the function (a sentence) of the UAA highlighted in blue?C. If the sequence highlighted in blue were changed from UAA to UAG, how would that affecttranslation? D. (1) The sequence highlighted in yellow above is moved to a new position indicated below. Howwould that affect translation? (2) How long would be the protein produced from this new mRNA? Thank youarrow_forwardMolecular Biology Question Explain why the cell doesn’t need 61 tRNAs (one for each codon). Please help. Thank youarrow_forward
- Molecular Biology You discover a disease causing mutation (indicated by the arrow) that alters splicing of its mRNA. This mutation (a base substitution in the splicing sequence) eliminates a 3’ splice site resulting in the inclusion of the second intron (I2) in the final mRNA. We are going to pretend that this intron is short having only 15 nucleotides (most introns are much longer so this is just to make things simple) with the following sequence shown below in bold. The ( ) indicate the reading frames in the exons; the included intron 2 sequences are in bold. A. Would you expected this change to be harmful? ExplainB. If you were to do gene therapy to fix this problem, briefly explain what type of gene therapy youwould use to correct this. Please help. Thank youarrow_forwardMolecular Biology Question Please help. Thank you Explain what is meant by the term “defective virus.” Explain how a defective virus is able to replicate.arrow_forwardMolecular Biology Explain why changing the codon GGG to GGA should not be harmful. Please help . Thank youarrow_forward
- Stage Percent Time in Hours Interphase .60 14.4 Prophase .20 4.8 Metaphase .10 2.4 Anaphase .06 1.44 Telophase .03 .72 Cytukinesis .01 .24 Can you summarize the results in the chart and explain which phases are faster and why the slower ones are slow?arrow_forwardCan you circle a cell in the different stages of mitosis? 1.prophase 2.metaphase 3.anaphase 4.telophase 5.cytokinesisarrow_forwardWhich microbe does not live part of its lifecycle outside humans? A. Toxoplasma gondii B. Cytomegalovirus C. Francisella tularensis D. Plasmodium falciparum explain your answer thoroughly.arrow_forward
- Select all of the following that the ablation (knockout) or ectopoic expression (gain of function) of Hox can contribute to. Another set of wings in the fruit fly, duplication of fingernails, ectopic ears in mice, excess feathers in duck/quail chimeras, and homeosis of segment 2 to jaw in Hox2a mutantsarrow_forwardSelect all of the following that changes in the MC1R gene can lead to: Changes in spots/stripes in lizards, changes in coat coloration in mice, ectopic ear formation in Siberian hamsters, and red hair in humansarrow_forwardPleiotropic genes are genes that (blank) Cause a swapping of organs/structures, are the result of duplicated sets of chromosomes, never produce protein products, and have more than one purpose/functionarrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax CollegeBiology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningHuman Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage LearningBiology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning





