Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 11, Problem 2S
Mules are the offspring of the mating of a horse and a donkey. Mules are unable to reproduce. A horse has a total of 64 chromosomes, whereas donkeys have 62 chromosomes. Use your knowledge of meiosis to predict the diploid chromosome number of a mule. Propose a possible explanation for the inability of mules to reproduce.
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Students have asked these similar questions
Explain how meiosis is able to produce cells with a haploid number of chromosomes and explain exactly what happens in meiosis how the chromosome number becomes haploid; and how meiosis differs from mitosis.
Which statement correctly describes human chromosomes after meiosis I?
Human gametes end up with one of each type of 23 chromosomes.
Human gametes end up with one of each type of 22 chromsomes.
There are 46 chromosomes in each cell.
The haploid number is 22.
Which statement is true of meiosis?
1)two identical cells in both divisions
2)the first division produces haploid cells and the second produces diploid cells
3)the first division produces diploid cells and the second produces haploid cells
4) the products of both meiotic divisions are haploid
Chapter 11 Solutions
Biology
Ch. 11 - In comparing somatic cells and gametes, somatic...Ch. 11 - What are homologous chromosomes? a. The two halves...Ch. 11 - Chiasmata form a. between homologous chromosomes....Ch. 11 - Crossing over involves each of the following with...Ch. 11 - During anaphase I a. sister chromatids separate...Ch. 11 - At metaphase I the kinetochores of sister...Ch. 11 - What occurs during anaphase of meiosis II? a. The...Ch. 11 - Which of the following does NOT contribute to...Ch. 11 - How does DNA replication differ between mitosis...Ch. 11 - Which of the following is NOT a distinct feature...
Ch. 11 - Which phase of meiosis I is most similar to the...Ch. 11 - Structurally, meiotic cohesins have different...Ch. 11 - Prob. 6ACh. 11 - Diagram the process of meiosis for an imaginary...Ch. 11 - Mules are the offspring of the mating of a horse...Ch. 11 - Compare the processes of independent assortment...Ch. 11 - Aneuploid gametes are cells that contain the wrong...
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- In meiosis, a __________________ cell divides to create ________________ ________________ cells that are ___________________ ___________________ the parent and each other. Meiosis is the process of _____________________ __________________arrow_forwardHow are mitosis and meiosis alike? How are they different? Write a statement to compare and contrast mitosis and meiosis.arrow_forwardWhich statement best describes the genetic content of the two daughter cells in prophase II of meiosis? a. haploid with one copy of each gene b. haploid with two copies of each gene c. diploid with two copies of each gene d. diploid with four copies of each genearrow_forward
- When does synapsis between homologous chromosomes occur? A. prophase I of meiosis B. prophase II of meiosis C. prophase of mitosis D. metaphase of mitosisarrow_forwardExplain why you would expect genetic differences between cells to arise from meiosis and not from mitosisarrow_forwardMeiosis explains whya. you inherited half of your DNA from each of your parents.b. the sister chromatids in a chromosome are identical to each other.c. each of your somatic cells contains the same DNA.d. zygotes contain half as much DNA as somatic cells.arrow_forward
- Give explanation X and Y chromosomes are not homologs, but in meiosis they do pair and segregate in XY organisms to create 50% haploid gametes with an X chromosome and 50% haploid gametes with a Y chromosome. How is pairing achieved? a. Since all other homologous chromosomes pair, the remaining two chromosomes pair by default. b Pairing proteins are capable of binding to different genes on the X and Y chromosomes, which allows them to pair. c. None of the statements is correct. d. They don't actually pair. Random segregation generally ensures the X and Y chromosomes separate. e.Pseudoautosomal regions that are homologous exist at the tips of both the X and Y chromosomes, and they allow pairing.arrow_forwardIf meiosis produce haploid cells, how is the diploid numberrestored for those organisms that spend most of their life cycle in the diploid state? a. DNA replication b. reverse transcription c. synapsis d. fertilizationarrow_forwardYou observe a human gamete cell that has 24 chromosomes in it. What has happened? Explain.arrow_forward
- Use an illustration to show the differences between mitosis and meiosis. Explain three processes that give rise to genetic variation. The diagram below shows a pair of homologous chromosomes in a diploid cell. Which of the following is the correct diagram of the gametes that produced the cell if there were no errors in meiosis?arrow_forwardWhich process occurs in meiosis but does not occur in mitosis? 1.synapsid of chromosomes2.chromosome replication 3.alignment of chromosomes at the metaphase plate 4 condensation of chromosomesarrow_forwardDetermine the number of chromosomes in a mule, which is produced by a cross between a horse having 64 chromosomes and a donkey having 62 chromosomes. Also describe the reasons for the fact that most mules are sterile.arrow_forward
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