Test on Biotechnologically Engineered Plants
Molecular Markers: Tools for Biotechnologically Engineered Plants
Test: Plant Genetic Diversity & Markers, Genomics: přehled molekulárních markerů a genotypizačních metod, Genomics: rostlinné genetické markery pro diverzitu a šlechtění, Genomics: RFLP a další DNA molekulární markery v genetice, Genomics: využití molekulárních markerů v genetické analýze, Genomics: SSR (mikrosatelity) markery pro genetickou diverzitu, Genomics: ISSR markery pro hodnocení genetické variability, Genomics: PCR-založené molekulární markery a protokoly, Genomics: AFLP markery pro genetické mapování a diverzitu, Genomics: molekulární markery pro studium genetické diverzity, Plant Biotechnology, Bioproducts & Applications — General Plant Biotech, Genomics: techniky detekce molekulárních markerů v genotypizaci, Genomics: molekulární markery v rostlinné biotechnologii, Genomics: role PCR v aplikacích molekulárních markerů, Genomics: RAPD a mikrosatelitní markery v rostlinných studiích, Genomics: mikrosatelity a PCR-markery pro genetické analýzy, Genomics: aplikace molekulárních markerů v rostlinné biotechnologii, Genomics: molekulární markery v šlechtění rostlin a marker-assisted selection, Genomics: rostlinné markery pro genetické mapování a QTL identifikaci, Genomics: integrace molekulárních markerů do genetického mapování, Genomics: molekulární markery ve studiu rostlinné genetiky a diverzity, Genomics & Sequencing Technologies — DNA Sequencing Methods, Genomics & Sequencing Technologies — Genome Sequencing Approaches, Genomics & Sequencing Technologies — Genomic Libraries & Mapping, Plant Functional Genomics, Functional Genomics, Transcriptomics and Gene Expression, Plant Genomics, Structural Genomics, Genomics & Sequencing Technologies — Next-Generation Sequencing, Proteomics, Plant Metabolomics, Transgenic Plants & Crops, Plant Biotechnology, Bioproducts & Applications — Plant-made Pharmaceuticals, Plant Biotechnology, Bioproducts & Applications — Vaccines & Biofortification, Crop Trait Engineering, Plant Genetic Engineering Applications, Disease Resistance Engineering, Crop Yield Engineering, Plant Biotechnology, Bioproducts & Applications — Plant-made Vaccines & Biopharmaceuticals, Quinoa Genomics and Diversity, Quinoa Germplasm and Accessions, Plant Biotechnology, Bioproducts & Applications — Plant-based Bioproducts, Plant Breeding & Haploidy Techniques, GM Crops & Regulation, Genetic Transformation Methods, Agrobacterium-based Transformation, Somatic Embryogenesis Approaches, Plant Biotechnology, Bioproducts & Applications — Tree Propagation, Tissue Culture Fundamentals, Culture Media & Ingredients, Plant Physiology & Hormonal Regulation, Laboratory Facilities & Techniques, Biotechnology Applications, Contamination & Pathogen Control, Stress, Phenolics & Antioxidants, Regeneration & Organogenesis, Acclimatization & Hardening, Micropropagation Methods, Haploid Production & Embryo Culture, Health Indexing & Virus Elimination, Cryopreservation & Long-term Storage, Protoplast Culture & Fusion, Synthetic Seeds & Encapsulation, Genetic Stability & Somaclonal Variation, Molecular Biology & Molecular Genetics: Core Terms, Molecular Biology & Molecular Genetics: Plant Molecular Biology, Glossary & Reference, Molecular Biology & Molecular Genetics: Techniques & Glossaries, Plant Breeding & Improvement, Molecular Tools & Cloning, Molecular Biology & Molecular Genetics: DNA Structure & Methods, Plant Biotechnology, Bioproducts & Applications — Genetic Elements & Transposons, Organelle Transformation, Regulation & Biosafety, Regulation, Biosafety & Ethical Considerations
20 questions
Question 1: Did Watson and Crick postulate that DNA has a double helix structure with phosphate groups oriented outwards, based on their interpretation of diffraction patterns from semi-crystalline DNA preparations?
A. Ano
B. Ne
Explanation: Watson and Crick interpreted diffraction patterns from semi-crystalline DNA preparations obtained by Maurice Wilkins and Rosalind Franklin. They postulated that DNA had a double helix structure (two DNA strands), with the phosphate groups oriented outwards from this helix.
Question 2: Según los hallazgos de Erwin Chargaff, ¿cuáles de las siguientes afirmaciones sobre las proporciones de nucleótidos en el DNA son correctas?
A. El contenido de guanina (G) es similar al de citosina (C).
B. La abundancia de los cuatro nucleótidos (A, T, G, C) es siempre en una razón estequiométrica de 1:1:1:1.
C. El contenido de adenina (A) es muy próximo al de timina (T).
D. Las proporciones de bases son incompatibles con el modelo de apareamiento de bases.
Explanation: El texto establece que Erwin Chargaff demostró que el contenido de G era similar al de C, y el contenido de A era muy próximo al de T. También indica que las abundancias relativas de los cuatro nucleótidos no estaban en una razón estequiométrica de 1:1:1:1, y que el modelo de apareamiento de bases estaba en completo acuerdo con las proporciones estequiométricas obtenidas por Chargaff.
Question 3: The use of Ac/Ds transposable elements for segregating desired and resistance cassettes via backcrosses is an alternative method that completely bypasses the need for co-transformation systems.
A. Ano
B. Ne
Explanation: The study material indicates that segregation of cassettes using Ac/Ds elements and backcrosses is done "in the same way as would be done in a co-transformation system," implying a similarity in approach rather than a complete bypass or replacement of co-transformation for achieving segregation.
Question 4: Which statement accurately describes Barbara McClintock's discovery regarding Ds elements in maize, according to the provided material?
A. She identified Ds elements as immobile sequences that prevent genetic recombination.
B. She described Ds elements as mobile genetic sequences that can spontaneously relocate within the genome.
C. She found that Ds elements require the presence of Ac elements to provide the necessary enzymatic activities for their movement.
D. She concluded that Ds elements are simple repetitive sequences without any known function in genetic rearrangement.
Explanation: Barbara McClintock first described mobile genetic elements (transposons) in eukaryotes through her work in maize. She identified these sequences as Ds (dissociation) elements. The material states that Ds elements are sequences that can excise from one genomic site and relocate to another spontaneously. It also specifies that this movement occurs under the presence of an Ac (activator) element, which provides the necessary enzymatic activities (transposases).
Question 5: The aminoglycoside 3'-adenyl transferase (aad) gene used in chloroplast transformation presents no discussed theoretical risk of transferring antibiotic resistance to bacteria in digestive tracts.
A. Ano
B. Ne
Explanation: The study materials state that the theoretical possibility of transferring this resistance gene to bacteria in the digestive tracts, though remote, is open to discussion, as these antibiotics also control bacterial infections in humans and animals.