Hox genes are activated in specific regions of the body (e.g. back of the head) and activate other genes to build specific structures in those regions. This was largely discovered by looking at the effects of mutants of the various hox genes. What other technique would provide information on the action of hox genes? Group of answer choices A. copy hox genes and place them in bacteria B. copy hox genes and place them in plants C. completely remove all hox genes from the genome D. change the control of hox genes so that they are expressed in different body regions E. reverse the order of the hox genes on the chromosome

Hox genes are activated in specific regions of the body (e.g. back of the head) and activate other genes to build specific structures in those regions. This was largely discovered by looking at the effects of mutants of the various hox genes. What other technique would provide information on the action of hox genes? Group of answer choices A. copy hox genes and place them in bacteria B. copy hox genes and place them in plants C. completely remove all hox genes from the genome D. change the control of hox genes so that they are expressed in different body regions E. reverse the order of the hox genes on the chromosome

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter10: Biotechnology

Section: Chapter Questions

Problem 6RQ: What is the role of Agrobacterium tumefaciens in the production of transgenic plants? a. Genes from...

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Which of the following is NOT true regarding Hox genes. A) The sequence they appear in their corresponding chromosomes is the same order of their expression along the front to back of the developing animal. B) Homologues of the same Hox genes found in flies can be found in humans. C) Hox genes are only found in animals with bilateral symmetry. D) Animals with more complex body plans tend to have more sets of Hox genes through gene duplication events.
Which statement about Hox genes is false? a. They are expressed in similar patterns in the embryos of both mice and flies. b. They include a conserved region of base pairs called the homeobox. c. They are arranged in similar clusters of genes in both mice and flies. d. They are part of the so-called genetic toolkit. e. Because of their important functional roles, they evolved rapidly in both mammals and flies.
Genetic Diseasesa. List the differences between infectious and genetic diseases.b. Discuss the reasons why genetic diseases could hardly be diagnosed in fish.c. Describe the how albinism occur in fish and why it is considered a disease.d. List other fish species, documented to exhibit albinism.e. Elucidate the process by which melanoma or skin cancer-prone sword tail develops. Describethe genetic mechanism involved.f. Describe how domestication can lead to genetic problems in aquaculture.
Last week when I mutated the SSA1 gene in yeast it made cells grow faster, but made them sensitive to temperature. SSA1 can be said to display what? a. Antagonistic hypertrophy b. Agonistic pleiotropy c. Agonistic hypertrophy d. Antagonistic pleiotropy e. Reductive pleiotropy f. Modular pleiotropy
Which of the following evolutionary changes is an illustration of horizontal gene transfer? the human point mutation which changes a T into an A in the sickle-cell b-globin gene B. origin of the tetraploid potato (Solanum tuberosum) from its diploid ancestor (Solanum stenotomum) non-disjunction of the duplicated human chromosome 21, causing Down’s syndrome D. the green sea slug acquiring the genes for making chlorophyll from the chloroplasts of green algae the single gene deletion which can reduce the variety of mating types in yeast
Why 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.
A gene in jellyfish that make them glow in the dark was cut out and replaced inside a bacteria cell. The bacteria will now glow in the dark. Is this and example of selective breeding or genetic engineering?
Gonorrhea is a sexually transmissible disease (STD) caused by the bacterium Neiserria gonorrhoeae. In the 1940s, penicillin was introduced as an antibiotic to treat gonorrhea. In particular, the drug inhibits the formation of new cell walls in dividing bacterial cells, making new cells vulnerable to the human body's defences. However, a new strain of Neiserria gonorrhoeae was found that is capable of breaking down penicillin, making this strain resistant. The emergence of this new strain has been associated with instances of non-strict compliance of certain patients on the use of penicillin as well as the improper administration of the drug. Based on the information given, formulate a strategy that could help control this new strain.
Please answer questions 1.a, 1.b, and 1.c Question 1.a Which of the following is a limitation of RTV gene therapy? a. It can only be used on somatic cells b. The virus can repackage its RNA genome and cause widespread infection c. Random insertion of DNA into the genome can affect existing necessary genes d. The RNA genome cannot be copied into DNA Question 1.b Please choose the TRUE statement: a. Somatic cell transformation is easier than germline cell transformation b. Just like changes to the germline, changes in somatic cells are also heritable so these changes would pass onto the next generation of offspring c. In AAV, transcription and translation of the dsDNA (therapeutic DNA) uses the host machinery d. Someone with an autosomal dominant genetic disease can receive AAV or RTV as a cure Question 1.c Which of the following is the only gene therapy that does not introduce novel DNA into cells? a. RTV gene therapy b. AAV…
A single zebrafish gene function was inactivated completely by mutation, and a zebrafish with this mutation had none of its normal horizontal stripes. Foreach of the following statements, indicate whether the statement is certainly true, certainly untrue, or if thereis insufficient information to decide.a. The normal gene function is required for the viability of the zebrafish.b. The normal gene function is required for the formation of stripes.c. The normal gene function is required to make thepigment deposited in the stripes.d. The gene is required in zebrafish only for stripeformation.
What is the role of Agrobacterium tumefaciens in the production of transgenic plants? a. Genes from A. fume fociens are inserted into plant DNA to give the plant different traits. b. Transgenic plants have been given resistance to the pest A. tumefacaens. c. A. wmefaciens is used as a vector to move genes into plant cells. d. Plant genes are incorporated into the genome of Agrobacterium tumefaciens.
a. Explain how you could use worms transformedwith myo-2::GFP to find mutations that disrupt thestructure of the pharynx. How would the presenceof the transgene facilitate the mutant screen?b. Nematodes homozygous for loss-of-function mutations in a gene called pha-4 have no detectablepharyngeal structures. How could you use myo2::GFP to determine if pha-4 is a master regulatory gene that directs development of the pharynxin a manner similar to the way Pax-6/eyeless controls eye development?