Concepts of Genetics (12th Edition)
12th Edition
ISBN: 9780134604718
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino, Darrell Killian
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 23, Problem 6PDQ
(a)
Summary Introduction
To determine: The meaning of maternal effect genes.
Introduction: Development of an organism at the cellular level is marked by the process of specification, differentiation, and development. Various genes are involved in the proper development of an embryo.
(b)
Summary Introduction
To determine: The period of development of gene products of maternal effect genes and their location.
Introduction: The development in Drosophila is maintained by the zygotic genes and maternal effect genes. Maternal effect genes regulate the early embryonic development in an organism.
(c)
Summary Introduction
To determine: The aspects of development that are controlled by maternal effect genes.
Introduction: As mentioned in the concept introduction part (b).
(d)
Summary Introduction
To determine: The
Introduction: Maternal effect genes are activated after the process of fertilization. These control the axis and polarity of an embryo.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
With regard to development, what are the roles of the maternaleffect genes versus the zygotic genes? Which types of genes are needed earlier in the development process?
la)Elene worked on a
construction site for part of
the time that she was pregnant with her daughter,
Abby. It was later discovered that the paint she
was using contained high levels of lead. We know
that lead can be harmful to prenatal development.
What are two questions you might want to ask in
order to understand the relative risk of lead
exposure on Abbi's development?
1b)Elana was born with cataracts, which made
her completely blind. When she was 14 years-old
she underwent surgery to remove the cataracts,
which allowed visual input to be transmitted to
her brain for the first time. However, even though
the surgery was a success, Elana's vision was
never fully functional. i) Describe how the
features of neural plasticity might help to explain
why Elana's vision was not restored. ii) Propose
one factor that might have increased the chance
that Elana would develop the ability to see, and
briefly explain why.
Which of the following illustrates the regulative nature of early mouse development? (a) the mouse embryo is freeliving prior to implantation in the uterus (b) it is possible to produce a transgenic mouse (c) it is possible to produce a mouse in which a specific gene has been knocked out(d) genes related to Drosophila homeotic genes have been identified in mice (e) a chimeric mouse can be produced by fusing two mouse embryos
Chapter 23 Solutions
Concepts of Genetics (12th Edition)
Ch. 23 - Suppose you initiate a screen for maternal-effect...Ch. 23 - Prob. 2NSTCh. 23 - Prob. 1CSCh. 23 - Prob. 2CSCh. 23 - Prob. 1PDQCh. 23 - Prob. 2PDQCh. 23 - Prob. 3PDQCh. 23 - Nuclei from almost any source may be injected into...Ch. 23 - Distinguish between the syncytial blastoderm stage...Ch. 23 - Prob. 6PDQ
Ch. 23 - Prob. 7PDQCh. 23 - List the main classes of zygotic genes. What is...Ch. 23 - Experiments have shown that any nuclei placed in...Ch. 23 - Prob. 10PDQCh. 23 - Prob. 11PDQCh. 23 - Prob. 12PDQCh. 23 - Prob. 13PDQCh. 23 - Prob. 14PDQCh. 23 - Prob. 15PDQCh. 23 - Prob. 16PDQCh. 23 - Prob. 17PDQCh. 23 - A number of genes that control expression of Hox...Ch. 23 - The apterous gene in Drosophila encodes a protein...Ch. 23 - In Arabidopsis, flower development is controlled...Ch. 23 - Prob. 21ESPCh. 23 - Prob. 22ESPCh. 23 - Much of what we know about gene interactions in...Ch. 23 - Dominguez et al. (2004) suggest that by studying...
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
- Discuss the role of homeotic genes in development. Explain what happens to the phenotype of a fruit fly when a gain-of-function mutation in a homeotic gene causes the protein to be expressed in an abnormal region of the embryo. What are the consequences of a loss-of-function mutation in such a gene?arrow_forwardAt which stage of development does the Id protein function? Why is its function important?arrow_forwardZygote Embryo Muscle cells Intestinal cells Liver cells Blood cells Nerve cell Cardiac cells (1) Specialization occurs, resulting in the formation of a great variety of cell types. (2) Genes are inserted into the zygote to allow for the formation of different cell types. (3) The expression of genes responsible for the different cell types is controlled by the placenta. (4) The genetic information in the zygote is divided to produce a complete set for each cell typearrow_forward
- What are some master genes important in embryonic development?arrow_forwardThe anterior–posterior axis of a Drosophila embryo is first established by certain (a) homeotic genes (b) maternal effect genes (c) segmentation genes (d) proto-oncogenes (e) pair–rule genesarrow_forwardIf an AaBbCcdd male mates with an AaBbCCDd female: A) What is the minimum number of ridge-producing genes possible in one of their children? B) What would the be the TRC for this child if it is a male? C) If this child is a male, will he have a higher or lower TRC than the parent with the lower ridge count?arrow_forward
- Give examples of genes that affect development in fruit flies by regulating gene expression at the level of (a) transcription and (b) translation.arrow_forwardWhat causes most of the phenotypic abnormalities in someone with Down's Syndrome? A) They have many gene mutations that produce nonfunctional proteins. B) They express too much of some proteins during development. C) Their cells cannot go through mitosis properly during development because they have an odd number of chromosomes. D) Their chromosomes cannot pair during meiosis.arrow_forwardAt which stage of development does XCI initially occur?arrow_forward
- Gradients of morphogens can be preestablished in the oocyte. Also, later in development, morphogens can be secreted from cells. How are these two processes similar and different?arrow_forwardWhat is true of the Progress Zone model? a) the length of time a cell resides in the progress zone dictates its identity along the proximodistal axis b) it is consistent with the outcome of removing the AER at successively later stages of limb development c) once a cell leaves the progress zone, its identity is established along the proximodistal axis d) cells of the progress zone are stimulated to divide by the AER e) all of the above You isolate a new mutant chicken strain in which limb outgrowth is severely curtailed. Limbdevelopment begins and the AER initially forms, but the AER then degenerates and subsequent development of the limb is aborted. Which of the following is a possible explanation for the AER phenotype? a) the mutant gene may function cell autonomously in the AER b) the mutant gene may function cell-nonautonomously in the limb bud mesenchyme c) the mutant gene may interfere with the feedback loop between the mesenchyme and AER d) all of the abovearrow_forwardCancer-causing mutations in genes can have different effects on the protein products expressed. a) What type of mutation would be dominant in the development of cancer? Why? b) What type of mutation would be expressed as a recessive trait in the development of cancer? Why? c) Based upon your answers to parts (a) and (b), how would you treat these situations using a gene therapy approach?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Embryology | Fertilization, Cleavage, Blastulation; Author: Ninja Nerd;https://www.youtube.com/watch?v=8-KF0rnhKTU;License: Standard YouTube License, CC-BY