ESSENTIALS OF GENETICS-W/MOD.ACCESS
9th Edition
ISBN: 9780134452876
Author: KLUG
Publisher: PEARSON
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Chapter 20, Problem 3PDQ
Nuclei from almost any source may be injected into Xenopus oocytes. Studies have shown that these nuclei remain active in transcription and translation. How can such an experimental system be useful in developmental genetic studies?
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Why would a chromosomal translocation that puts a proto-oncogene under the control of a widely expressed promotor cause cancerous cells to develop
X-Chromosome Inactivation in mammals results in the formation of what structures that can be seen in the nucleus?
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I am confused about how stem cell transplants works. If you put a semi differentiated tadpole nucleus in a denucleated egg cell, it’ll develop into a fully formed tadpole, but if you put a fully differentiated tadpole nucleus, it won’t (because the genes have already been expressed in a way where the cytoplasmic determinants cannot operate to the fullest). Then how come in stem cell transplants, you use adult nucleuses that are already developed and transplant them into the denucleated egg cells?
Chapter 20 Solutions
ESSENTIALS OF GENETICS-W/MOD.ACCESS
Ch. 20 -
CASE STUDY |One foot or another
In humans the...Ch. 20 - CASE STUDY| One foot or another In humans the HOXD...Ch. 20 - CASE STUDY| One foot or another In humans the HOXD...Ch. 20 - HOW DO WE KNOW? In this chapter, we have focused...Ch. 20 - Review the Chapter Concepts list on page 403. Most...Ch. 20 -
3. Nuclei from almost any source may be injected...Ch. 20 -
4. Distinguish between the syncytial blastoderm...Ch. 20 - (a) What are maternal-effect genes? (b) When are...Ch. 20 - (a) What are zygotic genes, and when are their...Ch. 20 - List the main classes of zygotic genes. What is...
Ch. 20 -
8. Experiments have shown that any nuclei placed...Ch. 20 - How can you determine whether a particular gene is...Ch. 20 -
10. You observe that a particular gene is being...Ch. 20 - What are Hox genes? What properties do they have...Ch. 20 -
12. The homeotic mutation Antennapedia causes...Ch. 20 - The Drosophila homeotic mutation spineless...Ch. 20 - A number of genes that control expression of Hox...Ch. 20 - In Arabidopsis, flower development is controlled...Ch. 20 - Prob. 16PDQCh. 20 - Dominguez et al. (2004) suggest that by studying...
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- A drug causes the degradation of Cactus protein. What would be the effect of administering this drug to developing Drosophila embryos?arrow_forwardSince all cells contain the same number of chromosomes and the overall same/similar genome how would the genome in a nerve cell work differently than the genome of a muscle cell? In other words what epigenetic processes cause these differences between cell types at the molecular levelarrow_forwardWhat group of proteins play a key role in controlling the program of developmental changes? motor proteins transporters transcription factors restriction endonucleases cyclinsarrow_forward
- Scientists have cloned some animals by injecting a nucleus from an early embryo into an enucleated egg cell. Does this outcome demonstrate that genetic material is not lost during development? Why or why not?arrow_forwardWhat changes, if any, would you predict would occur in the pigmentation of Drosophila melanogaster with increased global warming? What type of genetic changes would you expect to see? Be as specific as you can.arrow_forwardWhich of the following statements regarding X-inactivation is TRUE?(posted) Inactivated X chromosomes are only found in somatic cells of females. After X-inactivation happens in a cell, all daughter cells resulting from mitotic events of that cell will have the same X chromosome ina none of the statements listed here are true X-inactivation is a random event that happens during human development right before a fetus is born. all of the statements listed here are true)arrow_forward
- What is similar about the positions of the HOX genes on the chromosomes in the fruit fly and mouse; the function of HOX gene in general, not the specific gene.arrow_forwardWhich of the following is an abnormality that can delay the metaphase-to-anaphase transitions?Attachments of both kinetochores to microtubules from the same spindle poleA failure of one kinetochore to attach to spindle microtubulesA mutation that inhibits the activity of the APCA lack of tension at the kinetochorearrow_forwardWhat is the function of Drosophila melanogaster RNA polymerase II in the cellarrow_forward
- What are the molecular switches involve in sporulation? explain the switches involved not the stages. molecular switches are different from sporulation stages.arrow_forwardThere are 40 chromosomes in germ cells of a ferret. How many DNA molecules are there in a ferret's somatic cell during G2 phase?arrow_forwardSomatic cells of the red fox, Vulpes vulpes, normally have 38 chromosomes. What is the number of chromosomes present in the nucleus during prophase II? 95 76 57 38 19arrow_forward
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