Homework Answers
Bacterial variation can occur by the transfer of genetic material through transduction transformation aur by transposable elements.
Bacterial variation can also occur by horizontal transfer of genetic material from one cell to another. ... Mutation and gene transfer work together to accelerate the rate of bacterial evolution. The spontaneous changes required to produce a new function (e.g. antibiotic resistance) may occur at a low frequency.
The bacterial variation causes various changes in this strains which include the development of resistance to the the antibiotics and and other extreme environment.
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What is responsible for genetic variation in bacteria? O gene influx from a different bacterial strain...
What is responsible for the genetic variation observed among offspring from the same parents? Select one:...
What is responsible for the genetic variation observed among offspring from the same parents? Select one: a. Independent assortment b. Gene linkage c. Recessive alleles d. Incomplete dominance
1a.The mitochondria of eukaryotic cells likely evolved from bacteria because they share genetic similarity to...
1a.The mitochondria of eukaryotic cells likely evolved from bacteria because they share genetic similarity to proteobacteria they have undergone rapid mutagenesis they show signs of horizontal gene transfer they exhibit a similar structural composition 1b.What technique can be used to assess the phylogeny of most bacterial species? Cultivation in the laboratory b) Microscopy and physiology c) 16s and genome sequencing d) Environmental growth conditions Cultivation in the laboratory Microscopy and physiology...
O c. Mutations are the ultimate source of genetic variation d. More individuals are born than...
O c. Mutations are the ultimate source of genetic variation d. More individuals are born than will survive. e. Individuals that possess the most favorable variations have the best chance of reproducing. en 44 If the bacterium Mycobacterium tuberculosis experiences a significant cost for maintaining a specific antibiotic-resistance gene, what would you expect to happen in environments that lack that antibiotic? answered Out of 2.00 question Select one: a. Bacteria with the resistance gene would try to make the cost...
How is genetic variation increased during sexual reproduction? Choose ALL that apply. Select one or more:...
How is genetic variation increased during sexual reproduction? Choose ALL that apply. Select one or more: a. Crossing over occurs. b. The reproduction of cells through binary fission resulting in two different daughter cells. c. Independent assortment of homologous chromosomes during meiosis. d. Alleles are inherited from two parents instead of one. e. The pairing of sister chromatids. Which of the following images shows crossing over? Select one: Consider a gene with two alleles that show complete dominance. When two...
QUESTION 12 Which of the following statements about genetic exchange in bacteria is NOT true? A....
QUESTION 12 Which of the following statements about genetic exchange in bacteria is NOT true? A. In conjugation there has to be a physical connection between the donor cell and the recipient cell. B. Antibiotic resistance can be transferred from one bacterial cell to another by conjugation. C. Interrupted conjugation results in the production of Hfr strains. D. Plasmids do not have to integrate into the host cell chromosome in order to be replicated. E. The order of gene transfer...
Three Hfr strains from the same bacterial species are analyzed for their ability to transfer genes...
Three Hfr strains from the same bacterial species are analyzed for their ability to transfer genes to F recipient bacteria. The data shown below list the origin of transfer (oriT) for each strain and give the order of genes, with the first gene on the left and the last gene on the right. Hfr Strain Genes Transferred Hfr 1 Hfr 2 oriT met pro leu gal oriT ala lac thr azi oriT azi trp met pro Hfr 3 Use the...
1 What is an imprinted gene? Select one: a. A gene that is found on a...
1 What is an imprinted gene? Select one: a. A gene that is found on a Barr body b. A gene that is silenced upon inheritance from a designated parent c. A gene that is inherited from only one parent d. A gene that is encoded on only one of the two copies of a chromosome Question 2 Which of the following is NOT a typical characteristic of cancer? Select one: a. Malignant cancers are typically not able to metastasize...
1) A researcher discovers a new species of bacteria that obtains its energy from other organisms...
1) A researcher discovers a new species of bacteria that obtains its energy from other organisms and its carbon from the atmosphere. This species can be categorized based upon its mode of nutrition as a: chemoheterotroph, photoautrotroph, photoheterotroph, or chemoautotroph? 2) A colony of antibiotic-resistant bacteria is mixed with a colony of antibiotic-sensitive bacteria. After a few days grown in the presence of antibiotics, all of the bacteria are resistant to the antibiotic. Which of these is most likely to...
Due to gene transfer between the organelles and the nucleus, Multiple Choice a chloroplast from one...
Due to gene transfer between the organelles and the nucleus, Multiple Choice a chloroplast from one plant species can be transferred to any other plant species. organelle genomes experience lower rates of mutation than they would if gene transfer did not occur. some proteins must be imported into organelles for their function mitochondria and chloroplasts have genes that allow them to live independently. mitochondrial genomes in all species have the same genes. What does DNA sequencing suggest about the relationship...
27. Beneficial mutations can: Select all that apply. protect from disease. permit an organism to become...
27. Beneficial mutations can: Select all that apply. protect from disease. permit an organism to become adapted to its environment. None of the other answer options is correct. never be reversed. 28. With regard to alleles that encode different forms of (beta)-globin in humans and their relation to malaria, which answer choices are examples of phenotypes? Select all that apply. sickle-cell anemia A4, AS, SS susceptibility to malaria altele C sickled red blood cells 29. An individual is heterozygous for...
O c. Mutations are the ultimate source of genetic variation d. More individuals are born than will survive. e. Individuals that possess the most favorable variations have the best chance of reproducing. en 44 If the bacterium Mycobacterium tuberculosis experiences a significant cost for maintaining a specific antibiotic-resistance gene, what would you expect to happen in environments that lack that antibiotic? answered Out of 2.00 question Select one: a. Bacteria with the resistance gene would try to make the cost...
How is genetic variation increased during sexual reproduction? Choose ALL that apply. Select one or more: a. Crossing over occurs. b. The reproduction of cells through binary fission resulting in two different daughter cells. c. Independent assortment of homologous chromosomes during meiosis. d. Alleles are inherited from two parents instead of one. e. The pairing of sister chromatids. Which of the following images shows crossing over? Select one: Consider a gene with two alleles that show complete dominance. When two...
Three Hfr strains from the same bacterial species are analyzed for their ability to transfer genes to F recipient bacteria. The data shown below list the origin of transfer (oriT) for each strain and give the order of genes, with the first gene on the left and the last gene on the right. Hfr Strain Genes Transferred Hfr 1 Hfr 2 oriT met pro leu gal oriT ala lac thr azi oriT azi trp met pro Hfr 3 Use the...
Due to gene transfer between the organelles and the nucleus, Multiple Choice a chloroplast from one plant species can be transferred to any other plant species. organelle genomes experience lower rates of mutation than they would if gene transfer did not occur. some proteins must be imported into organelles for their function mitochondria and chloroplasts have genes that allow them to live independently. mitochondrial genomes in all species have the same genes. What does DNA sequencing suggest about the relationship...
27. Beneficial mutations can: Select all that apply. protect from disease. permit an organism to become adapted to its environment. None of the other answer options is correct. never be reversed. 28. With regard to alleles that encode different forms of (beta)-globin in humans and their relation to malaria, which answer choices are examples of phenotypes? Select all that apply. sickle-cell anemia A4, AS, SS susceptibility to malaria altele C sickled red blood cells 29. An individual is heterozygous for...
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