Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 21, Problem 9TYPSS
QUANTITATIVE Imagine a situation in which a morphogen has its source at the posterior end of a Drosophila embryo. Every 100 um from the posterior pole, the morphogen concentration decreases by half. If a cell required l/16th the amount of morphogen found at the posterior pole to form part of a leg, how far from the posterior pole would the leg form?
a. 100 μm
b. 160 μm
c. 400 μm
d. 1600 μm
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Other than obvious changes in protein-encoding Neanderthal genes, changes in what type of non-coding DNA sequences would affect cell function?
A) Alu family of repeated sequences
B) Short tandem repeats (STRs)
C) Protein factors that regulate gene expression
D) Short interspersed nuclear elements (SINEs)
Which scenario would NOT cause a change to the amino acid that is added to a polypeptide chain?
a.
The mRNA sequence UCC changes to UCG.
b.
The mRNA sequence UCU changes to UAA.
c.
The mRNA sequence UCU changes to UUU.
d.
The mRNA sequence UCU changes to UGC.
e.
The mRNA sequence CGG changes to CAG.
In two sentences answer the following question. If all sheep cells have keratin genes for making wool, why are the keratin genes mostly transcribed in cells involved in making wool?
Chapter 21 Solutions
Biological Science (6th Edition)
Ch. 21 - 1. What is apoptosis?
a. an experimental technique...Ch. 21 - In adult animals, ______ are a source of...Ch. 21 - 3. What is a homeotic mutant?
a. an individual...Ch. 21 - 4. A tool-kit gene is _________.
Ch. 21 - CAUTION A friend is interested in isolating genes...Ch. 21 - 6. How is determination distinct from...Ch. 21 - What is the connection between genetic regulatory...Ch. 21 - Which of the following provides the strongest...Ch. 21 - QUANTITATIVE Imagine a situation in which a...Ch. 21 - 10. PROCESS OF SCIENCE Some stickleback fish...
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.Similar questions
- Consider a human lover cell vs a cheek cell: Explain whether the following components are identical/very similar in the two cells d.rRNA e. Proteinarrow_forwardIn a wild-type cell, the function of a protein encoded by a tumor-suppressor gene is to cause a cell to ______. A.) stop dividing B.)extend its telomeres C.) grow toward a new blood vessel D.) respond to a growth factorarrow_forwardIn a fly egg, the nurse cells are killed before they can produce bicoid mRNA. What will happen? Group of answer choices A. The larva will develop normally B. The resulting larva will have no head and two tail ends C. The resulting larva will have two heads D. The resulting fly will have legs growing out of its headarrow_forward
- How do Cyclins work? a. They are kinases that phosphorylate key proteins at different points in the cell cycle. b. They are transcription factors that regulate the transcription of genes required at different stages of the cell cycle. c. They stop progression of cells through the cell cycle. d. They bind and activate kinases related to progress through the cell cycle.arrow_forwardPlease answer fast Describe how specific molecules are used to change the gene expression of a gene in a cell. Explain if this change in gene expression is beneficial to either the cell or society, using specific examples .arrow_forwardMuscle cells differ from nerve cells mainly because they(A) express different genes.(B) contain different genes.(C) use different genetic codes.(D) have unique ribosomes.arrow_forward
- When in fruit fly development does axes development begin? A. in the unfertilized egg stage when maternal effect genes deposit mRNA and proteins in specific locations B. in the early embryo stage when induction signals between neighboring cells identify where the cells are in three-dimensional space C. in the larval stage when body segments appear, and pattern formation is evident D. in the pupal stage when a gradient of morphogens is establishedarrow_forwardWhy is it easier to manipulate embryonic stem cells to differentiate into various tissues than it is to manipulate a typical adult cell? a. As cells develop, signaling pathways can cause some genes to be turned off during development. b. Adult cells have different DNA content than do embryonic stem cells. c. Emybronic stem cells pose less of a threat for organ rejection as do an individual s own adult cells. d. It is no easier to manipulate emybronic stem cells to differentiate into various tissues than it is to manipulate a typical adult cell.arrow_forwardA. Which genes could be used to monitor the process of the disease? B.  If you worked for a drug company developing a treatment for the cancer, which genes would you target to turn on in cancer cells? C. Which genes would you target to turn off in cancer cells?arrow_forward
- What is a possible outcome of the addition of a transcription factor such as Myod to the nucleus of a cell? Assume that there are no other factors to either activate or prevent the response of the cell. Group of answer choices A) Production of mRNA from genes that were previously not expresed B)adding methyl groups to DNA C)prevention of protein synthesis D)uncoiling of the chromatin to allow transcriptionarrow_forwardA molecular biologist mutated a gene that encodes an enzyme (protein) that normally is secreted from the cell. The mutation resulted in the enzyme still being made, but it is now located in the cytoplasm. What do you think the molecular biologist changed in the cell coding this enzyme? a. The active site. b. The signal recognition particle (SRP). c. The signal sequence. d. The signal recognition particle receptor.arrow_forwardWhich describes a role for the kinetochore microtubules during mitosis? Polymerization drives anaphase A. Depolymerization drives anaphase B. Depolymerization drives anaphase A. Depolymerization drives separation of centrosomes (spindle poles) during prometaphase.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher: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
QCE Biology: Introduction to Gene Expression; Author: Atomi;https://www.youtube.com/watch?v=a7hydUtCIJk;License: Standard YouTube License, CC-BY