1. The diagram in Figure I shows a section through the mammalian testis. With reference to this diagram answer the following questions: Hormone secreting cells A C FIGURE 1 What percentage of each of the following types of cells would you expect to contain an X chromosome. Give a REASON for your answer in each case. i) type cell A ii) type cell B Name the cell type labelled B which under goes mitosis. State the importance of mitosis in a mature testis.
1. The diagram in Figure I shows a section through the mammalian testis. With reference to this diagram answer the following questions: Hormone secreting cells A C FIGURE 1 What percentage of each of the following types of cells would you expect to contain an X chromosome. Give a REASON for your answer in each case. i) type cell A ii) type cell B Name the cell type labelled B which under goes mitosis. State the importance of mitosis in a mature testis.
Biology 2e
2nd Edition
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark
Chapter43: Animal Reproduction And Development
Section: Chapter Questions
Problem 2VCQ: Figure 43.15 Which of the following statements about hormone regulation of the female reproductive...
Related questions
Question
![1. The diagram in Figure 1 shows a section through the mammalian testis. With reference to this
diagram answer the following questions:
Hormone secreting cells
A
FIGURE 1
What percentage of each of the following types of cells would you expect to contain an X
chromosome.
Give a REASON for your answer in each case.
i) type cell A
ii) type cell B
Name the cell type labelled B which under goes mitosis.
State the importance of mitosis in a mature testis.
State TWO ways in which cell division results in cell C being genetically different
from one another.
The graph in Figure 2 shows the effect of light on the period of oestrus in two groups of female
sheep. The females in the control group were subjected to the normal seasonal variation in day
length. Partially through the first year of the experiment, sheep in the experimental group were
subjected to reversed day-length cycle. The period of oestrus of each group of sheep is shown in
solid bands above the graph (Figure 2).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F20ca9ba4-86dc-4f48-a983-c7215e5f7285%2Faba6bb93-f923-4dd8-8967-dced8eb34895%2Ffqd7z5p_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1. The diagram in Figure 1 shows a section through the mammalian testis. With reference to this
diagram answer the following questions:
Hormone secreting cells
A
FIGURE 1
What percentage of each of the following types of cells would you expect to contain an X
chromosome.
Give a REASON for your answer in each case.
i) type cell A
ii) type cell B
Name the cell type labelled B which under goes mitosis.
State the importance of mitosis in a mature testis.
State TWO ways in which cell division results in cell C being genetically different
from one another.
The graph in Figure 2 shows the effect of light on the period of oestrus in two groups of female
sheep. The females in the control group were subjected to the normal seasonal variation in day
length. Partially through the first year of the experiment, sheep in the experimental group were
subjected to reversed day-length cycle. The period of oestrus of each group of sheep is shown in
solid bands above the graph (Figure 2).
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Knowledge Booster
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.Recommended textbooks for you
![Biology 2e](https://www.bartleby.com/isbn_cover_images/9781947172517/9781947172517_coverImage_Textbooks.gif)
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
![Human Heredity: Principles and Issues (MindTap Co…](https://www.bartleby.com/isbn_cover_images/9781305251052/9781305251052_smallCoverImage.gif)
Human Heredity: Principles and Issues (MindTap Co…
Biology
ISBN:
9781305251052
Author:
Michael Cummings
Publisher:
Cengage Learning
![Biology (MindTap Course List)](https://www.bartleby.com/isbn_cover_images/9781337392938/9781337392938_smallCoverImage.gif)
Biology (MindTap Course List)
Biology
ISBN:
9781337392938
Author:
Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:
Cengage Learning
![Biology 2e](https://www.bartleby.com/isbn_cover_images/9781947172517/9781947172517_coverImage_Textbooks.gif)
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
![Human Heredity: Principles and Issues (MindTap Co…](https://www.bartleby.com/isbn_cover_images/9781305251052/9781305251052_smallCoverImage.gif)
Human Heredity: Principles and Issues (MindTap Co…
Biology
ISBN:
9781305251052
Author:
Michael Cummings
Publisher:
Cengage Learning
![Biology (MindTap Course List)](https://www.bartleby.com/isbn_cover_images/9781337392938/9781337392938_smallCoverImage.gif)
Biology (MindTap Course List)
Biology
ISBN:
9781337392938
Author:
Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:
Cengage Learning
![Human Physiology: From Cells to Systems (MindTap …](https://www.bartleby.com/isbn_cover_images/9781285866932/9781285866932_smallCoverImage.gif)
Human Physiology: From Cells to Systems (MindTap …
Biology
ISBN:
9781285866932
Author:
Lauralee Sherwood
Publisher:
Cengage Learning
![Biology: The Unity and Diversity of Life (MindTap…](https://www.bartleby.com/isbn_cover_images/9781337408332/9781337408332_smallCoverImage.gif)
Biology: The Unity and Diversity of Life (MindTap…
Biology
ISBN:
9781337408332
Author:
Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:
Cengage Learning
![Concepts of Biology](https://www.bartleby.com/isbn_cover_images/9781938168116/9781938168116_smallCoverImage.gif)
Concepts of Biology
Biology
ISBN:
9781938168116
Author:
Samantha Fowler, Rebecca Roush, James Wise
Publisher:
OpenStax College