Which of the following is an example of gene replacement? O Sheep that express the human insulin gene in mammary cells A human cell line in which both chromosomal copies of the FGFR gene were exchanged with mutant versions of the gene using homologous recombination O Genetically modified plants that express a bacterial enzyme that confers resistance to fungal infections All choices given are examples of gene replacement. Incorrect Not all examples are gene replacement. X X

Which of the following is an example of gene replacement? O Sheep that express the human insulin gene in mammary cells A human cell line in which both chromosomal copies of the FGFR gene were exchanged with mutant versions of the gene using homologous recombination O Genetically modified plants that express a bacterial enzyme that confers resistance to fungal infections All choices given are examples of gene replacement. Incorrect Not all examples are gene replacement. X X

Biology: The Unity and Diversity of Life (MindTap Course List)

15th Edition

ISBN:9781337408332

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter10: Control Of Gene Expression

Section: Chapter Questions

Problem 4CT: The photos below show flowers from two Arabidopsis plants. The plant on the left is wild-type...

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Your friend sends you two cancerous cell lines to examine and determine possible mutations. The results are shown below: Cell Line Mutation WT none (wild type DNA) 1 a deletion at the same region on both copies of chromosome 4 a point mutation in a gene on only one copy of chromosome 7 Based on this data, what type of geńe is mutated in each of the cell lines? Select all that apply O Cell line 2 has a mutation in an oncogene Cell line 1 has a mutation in a tumor suppressor gene Cell line 1 has a mutation in an proto-oncogene Cell line 2 has a mutation in a tumor suppressor gene
The photos below show flowers from two Arabidopsis plants. One plant is wild-type unmutated; the other carries a mutation in one of its ABC floral identity genes. This mutation causes sepals and petals to form instead of stamens and carpels. Refer to Figure 10.7 to decide which gene A, B, or C has been inactivated by the mutation.
The photos above show flowers from Arabidopsis plants. One plant is wild-type (unmutated); the other carries a mutation in one of its ABC floral identity genes. This mutation causes sepals and petals to form instead of stamens and carpels. Refer to Figure 10.8 to decide which gene (A, B, or C) has been inactivated by the mutation.
The photos below show flowers from two Arabidopsis plants. The plant on the left is wild-type (unmutated); the other carries a mutation that causes its flowers to have sepals and petals instead of stamens and carpels. The mutation inactivated one of the plant's ABC floral identity genes. Refer to Figure 10.8 and decide which gene (A, B, or C) has been inactivated.
Which of the following statements about genomic libraries and cDNA libraries is TRUE? O a genomic library contains exons only O a cDNA library is derived from chromosomal DNA O a genomic library is made using reverse transcriptase O a genomic library is derived from mRNA O a cDNA library is derived from mRNA and is made using reverse transcriptase
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Your friend sends you two cancerous cel| lines to examine and determine possible mutations. The results are shown below: Cell Line Mutation WT none (wild type DNA) 1 a deletion at the same region on both copies of chromosome 4 2 a point mutation in a gene on only one copy of chromosome 7 You learn that cell line 2 is a breast cancer cell line that expresses a mutant version of a receptor protein called KIT. Based on this data, which of the following is true ? Select all that apply Activation of KIT promotes progression through the cell cycle Activation of KIT releases an inhibition of a cyclin Activation of KIT causes cells to enter GO O Activation of KIT promotes cells to undergo apoptosis
Which of the following genetic mechanism isn't used by bacteria in the transference of genetic resistance to antibiotics? Which of the following genetic mechanisms is not used by bacteria in the transfer of antibiotic resistance? Select one: O transduction O conjugation O through transposons O transformation O crossing over between homologous chromosomes Which of the following is not consider one of the main factors in the emergence of antibiotic resistance? O a. an increase in immuocompromised patients f O b. increase O c. failures on the staff O d. an increase in antibiotic resistance pathogens
Original DNA Sequence: TACAC CTTGG CGACGACT... MRNA Sequence: Amino Acid Sequence: Mutated DNA Sequence #5 TACACCTT G G GACGACT... (Highlight the change) What's the mRNA sequence? What will be the amino acid sequence? Will there likely be effects? What type of mutation is this? 1. Which type of mutation is responsible for new variations of a trait? 2. Which type of mutation does not result in an abnormal amino acid sequence? 3. Which type of mutation stops the translation of an mRNA molecule? NO
The following is a difference between eukaryotic and prokaryotic gene regulation: O Only prokaryotes have operons O Only eukaryotes can regulate genes by altering chromatin structure O Only prokaryotes can have coordinated expression of several genes O Only eukaryotes have proteins that act as activators of transcription
Different cell types, for example a muscle or a blood cell in the same organism retain O only a small fraction of their original set of genes, the ones they will need specifically for functioning, but can regenerate these lost genes as needed. O a complete set of all the same genes, but most of the genes have been permanently altered so that they cannot be transcribed into mRNA transcripts. O a complete set of their genes, and retain the ability to express those genes under certain circumstances into MRNA. O the ability to change their DNA to add regulatory elements that can turn off or on genes.
Let’s suppose a researcher was interested in the effects of mutationson the expression of a protein-encoding gene for a proteinthat is 472 amino acids in length. This protein is expressed in leafcells of Arabidopsis thaliana. It has a molecular mass of approximately56,640 Da. Make a drawing that shows the expected resultsof a Western blot using proteins isolated from the leaf cells thatwere obtained from the following plants:Lane 1. A plant homozygous for a nonmutant geneLane 2. A plant homozygous for a deletion that removes the promoterfor this geneLane 3. A heterozygous plant in which one gene is nonmutant andthe other gene has a mutation that introduces an early stop codon atcodon 112Lane 4. A plant homozygous for a mutation that introduces anearly stop codon at codon 112Lane 5. A plant homozygous for a mutation that changes codon108 from a phenylalanine codon into a leucine codon