Which of the following is an example of epigenetics? a. X-inactivation. b. metagenomic analysis of microbial communities. c. using proteins to inhibit transcription. d. using PCR to amplify copies of genes
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- How has the use of model organisms advanced our knowledge of the genes that control human diseases?What is the advantage of studying the mRNA present in a cell rather than the DNA? A. The mRNA is more chemically stable at room temperature. B. The mRNA identifies which genes are expressed. C. The mRNA identifies inheritance patterns. D. The mRNA is better able to undergo PCR.Gene therapy can be used to introduce foreign DNA into cells ________. a. for molecular cloning b. by PCR c. of tissues to cure inheritable disease d. all of the above
- Ashanti Silva received the first gene therapy for the treatment of SCID. What do you think, would the combination of gene therapy and stem cell therapy be a better therapeutic option?A. What is the pathogen that is attacking bananas today?b. Why is this especially problematic in Africa? C. Why do we expect to lose the war with this pathogen?d. What is random mutagenesis?Why would a scientist wish to induce mutations? a. to increase the number of mutated phenotypes b. to create mutations in specific genes c. to test for carcinogen activity d. to create tumors for cancer research e. because she was crazier than a mutated bedbug
- Which among the following statements is not true about mutations? * a.) It may either occur at the chromosomes or at the sequence of nucleic acids. b.) It is caused either by mutagens or through hereditary genes. c.) All mutations cause diseases and disorders in the developing organism. d.) All mutations causes a change in the structure or sequence of the genetic material.Which of the following is not an application of biotechnology? A. Removal of heavy metal, persistent organic pollutants B. Pasteurization of milk C. Polysaccharide production D. Production of hormones, antibiotics, vaccinesWhich gene is incorporated into plasmids to detect recombinantcells?a. restriction endonuclease b. virus receptors c. a gene for antibiotic resistance d. reverse transcriptase
- Using the data. Which genes have successful transduction？successful PCR？successful DNA sequencing？why do the bacteria grow up to the edge of the area with antibiotics, pause, then continue to grow across the area with antibiotics? A) The antibiotics caused mutations in the DNA of the bacteria, making them resistant to the antibiotics. B) The bacteria mutated as a survival response to the presence of antibiotics, enabling the bacteria to become resistant to the antibiotics. C)A few bacteria experienced random mutations in their DNA, which allowed some of them to grow even though antibiotics were present. D) Researchers added antibiotic resistant bacteria to the culture, so that the bacteria would continue to grow across the area with antibiotics.Which of the following would be considered a transgenic organism? A. a human whose human blood-clotting gene was silenced B. a fern grown in cell culture from a single fern root cell C. a rat with rabbit hemoglobin genes