PATHOLOGY MCQ
GENETICS AND DISEASE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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identify similarities and differences in the genomes of different kinds of organisms
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determine whether a particular allele of a gene is dominant or recessive
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compare the phenotypes of different organisms
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cut DNA with restriction enzymes
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Detailed explanation-1: -Gel electrophoresis and DNA Electrophoresis enables you to distinguish DNA fragments of different lengths. DNA is negatively charged, therefore, when an electric current is applied to the gel, DNA will migrate towards the positively charged electrode.
Detailed explanation-2: -Gel electrophoresis can be used to compare the genes of different genomes or different individuals. It can be used to locate and identify one particular gene in an individual’s genome. What is genetic engineering? In genetic engineering, biologists make changes in the DNA code of a living organism.
Detailed explanation-3: -After the DNA has been digested with one or more restriction enzymes, it is separated by size using gel electrophoresis. A radioactive probe is then used to identify certain fragments of DNA that may differ between individuals.
Detailed explanation-4: -What does analyzing DNA using gel electrophoresis allows researchers to identify and study? It allows researchers to study specific genes, to compare them with the genes of other organisms, and to discover the functions of different genes and gene combinations.