Suggested Study Questions: 1. What is a karyotype? 2. Explain why staining of chromosomes is important in karyotyping. 3. How can karyotyping be useful in determining a fetus's phenotype?
Suggested Study Questions: 1. What is a karyotype? 2. Explain why staining of chromosomes is important in karyotyping. 3. How can karyotyping be useful in determining a fetus's phenotype?
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
Related questions
Concept explainers
Question
Transcribed Image Text:Suggested Study Questions:
1. What is a karyotype?
2. Explain why staining of chromosomes is important in karyotyping.
3. How can karyotyping be useful in determining a fetus's phenotype?
4. What are some of the limitations of karyotyping?
5. Define trisomy. Define monosomy.
6. Define non-disjunction.
7. In a species with a diploid number of 16, how many total chromosomes would be present
in a diploid cell of an organism with a monosomy?
8.
What is a Barr body? How many Barr bodies does a woman born with three X
chromosomes have?
![Time (hours) # of cells
1
2
64
10,000
30,000
80,000
170,000
106
0
½
4
6
10
19
32
110
Notes
Egg is fertilized
First cleavage
Polarization
Blastula
Gastrula
Neurula
Somite formation
Feeding tadpole
a) How many cell divisions took place in the first 4 hours?
i) 0
ii) 2
iv) 6
iii) 4
b) How many cells exist after 12 cycles (12 cell divisions)?
i) 2
ii) 64
iii) 4096
iv) 10,000
c) Using your graph, which of the seven time intervals has the most rapid rate of cell
division (increase in the number of cells in a time interval? [HINT: On the graph, the
rate is higher if the slope is steeper.]
0 to 12 hours
ii) 4 to 6 hours
v) 8
iii) 10 to 19 hours
iv) 32 to 110 hours
3) In the human brain, an estimated average rate of 250,000 nerve cells are produced each
minute during gestation and through 6 months after birth.
a) How many nerve cells are in a healthy 6-month-old human brain?
i) 1.62 x 108 nerve cells ii) 1.62 x 10¹¹ nerve cells
iii) 1.62 x 10¹4 nerve cells
4) One of the earliest stages of fertilization that can be measured in a sea urchin egg is
depolarization of the membrane around the egg. This occurs in 2 seconds. Egg and sperm
nuclei fuse at around 1200 seconds and the first division of the zygote is at 5500 seconds.
a) How many times longer does the process of nuclear fusion take than membrane
depolarization?
i) 2 times
ii) 100 times
iii) 600 times
iv) 1200 times
b) What is the maximum amount of time needed to synthesize a complete set of
chromosomes in the sea urchin zygote prior to its first division?
i) 2 seconds ii) 1198 seconds iii) 1200 seconds
seconds
iv) 4300 seconds v) 5500](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4431bf18-77fa-4d23-9482-7c6a6b7e832b%2Fd67f70db-8e7e-47b0-bc94-0c4bfa76d4b4%2Ffa53vw_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Time (hours) # of cells
1
2
64
10,000
30,000
80,000
170,000
106
0
½
4
6
10
19
32
110
Notes
Egg is fertilized
First cleavage
Polarization
Blastula
Gastrula
Neurula
Somite formation
Feeding tadpole
a) How many cell divisions took place in the first 4 hours?
i) 0
ii) 2
iv) 6
iii) 4
b) How many cells exist after 12 cycles (12 cell divisions)?
i) 2
ii) 64
iii) 4096
iv) 10,000
c) Using your graph, which of the seven time intervals has the most rapid rate of cell
division (increase in the number of cells in a time interval? [HINT: On the graph, the
rate is higher if the slope is steeper.]
0 to 12 hours
ii) 4 to 6 hours
v) 8
iii) 10 to 19 hours
iv) 32 to 110 hours
3) In the human brain, an estimated average rate of 250,000 nerve cells are produced each
minute during gestation and through 6 months after birth.
a) How many nerve cells are in a healthy 6-month-old human brain?
i) 1.62 x 108 nerve cells ii) 1.62 x 10¹¹ nerve cells
iii) 1.62 x 10¹4 nerve cells
4) One of the earliest stages of fertilization that can be measured in a sea urchin egg is
depolarization of the membrane around the egg. This occurs in 2 seconds. Egg and sperm
nuclei fuse at around 1200 seconds and the first division of the zygote is at 5500 seconds.
a) How many times longer does the process of nuclear fusion take than membrane
depolarization?
i) 2 times
ii) 100 times
iii) 600 times
iv) 1200 times
b) What is the maximum amount of time needed to synthesize a complete set of
chromosomes in the sea urchin zygote prior to its first division?
i) 2 seconds ii) 1198 seconds iii) 1200 seconds
seconds
iv) 4300 seconds v) 5500
Expert Solution
Step 1
Genetics involves inheritance, characteristics, DNA, genes, proteins, and chromosomes. Everyone wonders why brothers and sisters look so similar to one another. This is when heredity comes into play. Heredity is the transmission of qualities from parents to children.
As per our policy, we are answering the first 3 questions only. For the rest of the questions, kindly repost.
Step by step
Solved in 2 steps
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
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
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
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:
9781260159363
Author:
Martin, Terry R., Prentice-craver, Cynthia
Publisher:
McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:
9781260231700
Author:
Sylvia S. Mader, Michael Windelspecht
Publisher:
McGraw Hill Education