BIOLOGY HIGH SCHOOL

Archaeologists unearthed a human skull with a small dried fragment of the scalp still attached. They extracted a tiny amount of DNA from the scalp tissue. How could they obtain sufficient DNA for an analysis of the ancient human's genes? A. Subject the DNA to electrophoresis.
B. Use a nucleic acid probe.
C. Subject the specimen to amniocentesis.
D. Use the polymerase chain reaction.
E. Subject the DNA to restriction enzymes.

Answers

Answer 1
Answer:

Answer:

D. Use the polymerase chain reaction

Explanation:

Polymerase chain reaction (PCR) is a molecular technique used to make multiple copies or amplify  a particular DNA sample. This enables scientist conduct thorough genetic analysis on minute sample of DNA, simply by amplifying it to a large quantity.

The PCR machine is usually used to amplify DNA fragment. The DNA fragments undergo three major steps successively: denaturation, annealing and elongation
Answer 2
Answer:

Final answer:

The archaeologists would use the Polymerase Chain Reaction (PCR), a method for amplifying a specific fragment of DNA, to get sufficient DNA from the small scalp tissue sample for gene analysis. So the correct option is D.

Explanation:

To enhance the amount of DNA for a thorough analysis of the ancient human genes, the archaeologists would use the polymerase chain reaction (option D). The polymerase chain reaction, commonly known as PCR, is a method used to make numerous copies of a specified fragment of DNA. PCR is highly beneficial in research scenarios when only a small amount of DNA is available, as this technique can amplify a single or few copies of a specific DNA sequence to generate thousands to millions of copies. Techniques like electrophoresis, use of a nucleic acid probe, amniocentesis, or subjecting the DNA to restriction enzymes, are not primarily for amplification of DNA, but serve other purposes such as DNA separation, detection, prenatal testing, or DNA cutting at specific sequences, respectively.

Learn more about DNA Amplification here:

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Answers

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Answer:

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Explanation:

on edg 2021

I NEED HELP ASAP FOR TEST Ming’s mother served him fried eggs for breakfast. After seeing the eggs, he noticed that they closely resembled a stage in cell division that’s common to both meiosis and mitosis. Which stage will occur after the stage that resembles the fried eggs? First option prophase, second choice, anaphase, third choice, metaphase, last choice cytokinesis

Answers

Answer:

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Explanation:

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Answers

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Answer:

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Explanation:

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Answers

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Answer:

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Explanation:

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Answers

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Answers

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