Prehistoric specimens often contain minute amounts of ancientDNA. What technique can be used to increase the amount of DNAin an older sample? Explain how this technique is performed andhow it increases the amount of a specific region of DNA.
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Prehistoric specimens often contain minute amounts of ancient
DNA. What technique can be used to increase the amount of DNA
in an older sample? Explain how this technique is performed and
how it increases the amount of a specific region of DNA.
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- The diagram to the right shows how tiles can be put together in different ways. How does this example relate to the role of DNA as the universal genetic material in organisms?Based on what you already know, explain two reasons why is it important for scientists to beable to remove DNA from an organism? Keep in mind that an organism includes any livingthing, from bacteria to humans.One way to determine how closely related two species are is to analyze _____, which determines the amino acid sequence of proteins.a. DNAb. carbohydratesc. mutationsd. fingerprints
- A technology called PCR is used for replicating large quantities of DNA in forensic science (Chapter 13). Withthis technique, DNA is separated by heating with an automatedsystem. Why is information about the DNA sequence needed touse this technique?You compare two strands of mtDNA and discover that there are 3 differences in base pairs between them. Assuming that the mutation rate for the species that you are examining is 1 mutation every 20,000 years, how long ago did the two strands share a common ancestor? Write your answer in xxx,xxx format. These two strands shared a common ancestor _____________ years ago.Write a Good background introduction about DNA and why its important to extract it. At least 250 words.
- Explain about the first sequence of nuclear DNA isolatedfrom Neanderthal bone samples ?If DNA of a particular species was analyzed and it was found that it contains 27 percent A, what would be the percentage of C? a. 27 percent b. 30 percent c. 23 percent d. 54 percentCompare the bands of each set of parents to each of the babies and determine which baby belongs to which set of parents. Line up the bands and illustrate which bands each baby inherited from its mother and from its father. Figure 1 DNA fingerprint data obtained from three sets of infants and three sets of parents (a) Identify which baby belongs to which set of parents. (b) Explain why not all the bands in the mother’s or father’s profiles have a counterpart in the baby’s DNA profile. (c) List other examples where DNA fingerprinting could be used to identify an individual. (d) Explain why blood typing may not be a viable method of determining which baby belongs to which parent. (e) Identify the largest DNA fragment on the gel. Identify the smallest DNA fragment on the gel.
- Describe the secondary structure that DNA might form in an ancient, dehydrated tissue sample and explain how it is different from the common secondary structure found in most cells.Why is there a difference between how the DNA looks between a whole food sample (strawberry or peas) and a processed sample (chocolate or gummy)? Compare two samples: a fresh sample and a processed sample. Describe how they appear differently and describe why they appear differently.A 1000 nucleotide region gets sequenced from 22 dipolid individs. find the expected time to the most common ancestor that is recent.