1. Genes to be inherited together if they are close to each other. This in the a
ID: 101429 • Letter: 1
Question
1. Genes to be inherited together if they are close to each other. This in the above) is known as A. Crossing over B. C. Linkage D. 2. One 3. How many "cross-overs" are required to determine the order of 3 genes? A. Singh B. Double C. More than 10 D. None (zero) 4. In a single remain ? A. 1 B. 2 C. 3 D. 4. 5. Identify criterion(a) for "3-point mapping": A Heterozygous parents for all 3 genes B. Phenotype class must reflect genotype of parents' C. Sufficient number of offspring must be produced D. All of the above 6. What is the basis of "mapping" genes? A. Crossing over B. C. Linkage D. 7. What is produced in "greatest" number in F2 phenotypes? A. Non-crossover B. Single crossover (SCO) C. Double crossover (DCD) D. All of the above 8. What is produced in |lowest" number in F2 phenotypes? A. Non-crossover B. Single crossover (SCO) C. Double crossover (DCO) D. All of the above 9. Calculate "coefficient of coincidence (C) degree, if number of "observed" DCO is 3 and expected is 6: A. 0.5 B. 2 C. 3 D. 9 10. Interference (I) in the question above: 0.5 B. 2 C. 3 D. 9 11. A "complete" interference occurs when: A. No DCO B. Observed DCO fewer than expected C. Observed DCO more than expected D. All of the above 12. "Cystic fibrosis" is a good example of: A. Short repetitive sequence (microsatellite) B. C. D. 17. Which of the following transduction methods target ONLY certain genes to be A. Regular B. Generalized C. Specialized D. None of the above By what structure fertility factor are transfers from one to another bacterium during conjugation? A. B. C. D. 19. A mutant bacterium for a particular nutrient cannot grow in a medium that that is known as: A. Autotrophy B. C. D. All of the above 20. The bacterial cells that can pickup naked DNA from outside (extracellular) during transformation are known as? A. Recombination cell B. Genetically engineered cells C. Competent cells D. Helper cell If the plasmid DNA degree F, factor (fertility) incorporated into the bacterial DNA it is known as expected as: A. An (High frequency of recombination) cell B. F' cell C. F' cell D. F' cellExplanation / Answer
Answer:
1. Answer of 1 is C. Linkage
When genes tend to be inherited together if they are located close to each other, the phrnomenon is called as Linkage.
Crossing over is the exchange of genetic material between homologous chromosomes that result in recombinant chromosomes during sexual reproduction.
Synapsis is the pairing of two homologous chromosomes that occurs during meiosis.
Centimorgan is a map unit used to express the distance between two gene loci on a chromosome.
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2. Answer of question 2 is A. 1% recombination between two genes on a chromosome
One map unit (mu): A unit of distance in linkage map is called centimorgan. The distance equal to 1% recombination between two loci. The distance betweentwo linked gene pairs where one percent of the product of meiosis are recombinant.
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3. Answer of question 3 is B
To determine the order of 3 genes, double crossover is required.
first is testcross and second is back cross.
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4. Answer of question 4 is A
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