GROUP 2 FLASHCARD | MICROBIAL GENETICS LAB

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What does DGGE stand for?

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Denaturing Gradient Gel Electrophoresis

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What is the purpose of DGGE in microbial genetics?

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DGGE is used to separate DNA fragments based on their melting behavior, allowing for the analysis of genetic diversity in microbial communities.

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What gene is commonly analyzed in microbial genetics studies?

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16S rRNA gene is commonly analyzed as it is a marker for bacterial identification and phylogeny.

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What is the significance of the 16S rRNA gene in microbial studies?

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The 16S rRNA gene is highly conserved among bacteria, making it a useful target for studying evolutionary relationships and microbial diversity.

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What type of organism is Bacillus?

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Bacillus is a genus of bacteria known for its rod-shaped cells and ability to form spores.

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What is the role of Lactobacillus species in fermentation?

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Lactobacillus species are important in the fermentation process, particularly in the production of yogurt and sauerkraut, but they are not dominant in vinegar fermentation.

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What is PCR and its role in microbial genetics?

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PCR (Polymerase Chain Reaction) is a technique used to amplify specific DNA sequences, allowing for detailed analysis of microbial genes.

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What does the presence of multiple bands in DGGE indicate?

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The presence of multiple bands in DGGE indicates a diverse microbial community with different species present.

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What is the difference between 16S rRNA and 18S rRNA?

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16S rRNA is found in prokaryotes (bacteria), while 18S rRNA is found in eukaryotes (such as protozoa and fungi).

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What is the significance of identifying microbial species in food products?

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Identifying microbial species in food products is crucial for understanding fermentation processes, food safety, and quality control.