교과서 질문
What techniques can scientists use to determine if a particular transgene has been integrated into the genome of an organism?
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Ch. 20 - Recombinant DNA Technology
Klug12th EditionConcepts of Genetics ISBN: 9780135564776
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Table of contents
- Ch. 1 - Introduction to Genetics17
- Ch. 2 - Mitosis and Meiosis36
- Ch. 3 - Mendelian Genetics51
- Ch. 4 - Extensions of Mendelian Genetics74
- Ch. 5 - Chromosome Mapping in Eukaryotes51
- Ch. 6 - Genetic Analysis and Mapping in Bacteria and Bacteriophages46
- Ch. 7 - Sex Determination and Sex Chromosomes33
- Ch. 8 - Chromosome Mutations: Variation in Number and Arrangement40
- Ch. 9 - Extranuclear Inheritance31
- Ch. 10 - DNA Structure and Analysis43
- Ch. 11 - DNA Replication and Recombination44
- Ch. 12 - DNA Organization in Chromosomes30
- Ch. 13 - The Genetic Code and Transcription54
- Ch. 14 - Translation and Proteins47
- Ch. 15 - Gene Mutation, DNA Repair, and Transposition41
- Ch. 16 - Regulation of Gene Expression in Bacteria29
- Ch. 17 - Transcriptional Regulation in Eukaryotes41
- Ch. 18 - Post-transcriptional Regulation in Eukaryotes33
- Ch. 19 - Epigenetics33
- Ch. 20 - Recombinant DNA Technology44
- Ch. 21 - Genomic Analysis36
- Ch. 22 - Applications of Genetic Engineering and Biotechnology36
- Ch. 23 - Developmental Genetics37
- Ch. 24 - Cancer Genetics34
- Ch. 25 - Quantitative Genetics and Multifactorial Traits54
- Ch. 26 - Population and Evolutionary Genetics45
20장, 문제 23
What is the difference between a knockout animal and a transgenic animal?
검증된 단계별 안내1
Step 1: Understand the definition of a knockout animal. A knockout animal is one in which a specific gene has been intentionally disrupted or 'knocked out' to study the effects of losing that gene's function. This is usually done by targeted gene deletion or inactivation.
Step 2: Understand the definition of a transgenic animal. A transgenic animal is one that has had foreign DNA introduced into its genome, which can include additional copies of a gene, modified genes, or genes from other species, to study gene function or produce desired traits.
Step 3: Compare the genetic modifications. In knockout animals, the focus is on removing or disabling an existing gene, whereas in transgenic animals, new genetic material is added to the genome.
Step 4: Consider the purpose of each. Knockout animals help researchers understand the role of a gene by observing what happens when it is missing, while transgenic animals are used to study gene expression, protein function, or to create models with new traits.
Step 5: Summarize the key difference. The main distinction lies in the type of genetic alteration: knockout animals have genes removed or inactivated, and transgenic animals have new genes inserted.
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주요 개념
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Knockout Animal
A knockout animal is genetically engineered to have one or more specific genes completely disabled or 'knocked out.' This is done to study the function of that gene by observing the effects of its absence on the organism's traits or development.
추천 영상:
가이드 코스
21:21
Gamete Development
Transgenic Animal
A transgenic animal contains foreign DNA that has been deliberately inserted into its genome. This added gene can come from the same or different species and is used to study gene function, produce proteins, or model diseases.
추천 영상:
가이드 코스
09:12Transgenic Organisms and Gene Therapy
Genetic Engineering Techniques
Genetic engineering involves methods like gene targeting for knockouts and gene insertion for transgenics. Understanding these techniques helps differentiate how specific genes are removed or added to create knockout or transgenic animals.
추천 영상:
가이드 코스
11:43The Genetic Code
관련 실천
교과서 질문
One complication of making a transgenic animal is that the transgene may integrate at random into the coding region, or the regulatory region, of an endogenous gene. What might be the consequences of such random integrations? How might this complicate genetic analysis of the transgene?
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교과서 질문
When disrupting a mouse gene by knockout, why is it desirable to breed mice until offspring homozygous (−/−) for the knockout target gene are obtained?
477
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교과서 질문
How is fluorescent in situ hybridization (FISH) used to produce a spectral karyotype?
823
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교과서 질문
We usually think of enzymes as being most active at around 37°C, yet in PCR the DNA polymerase is subjected to multiple exposures of relatively high temperatures and seems to function appropriately at 65–75°C. What is special about the DNA polymerase typically used in PCR?
521
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교과서 질문
Traditional Sanger sequencing has largely been replaced in recent years by next-generation and third-generation sequencing approaches. Describe advantages of these sequencing methods over first-generation Sanger sequencing.
522
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