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Ch. 15 - Recombinant DNA Technology and Its Applications
Sanders - Genetic Analysis: An Integrated Approach 3rd Edition
Sanders3rd EditionGenetic Analysis: An Integrated ApproachISBN: 9780135564172Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoSanders 3rd EditionCh. 15 - Recombinant DNA Technology and Its ApplicationsProblema E.7a
Capitolo 15, Problema E.7a

The results shown are from a DNA test for four genes used in a paternity identification case. DNA for the mother (M) and her child (C) are shown along with DNA from two possible fathers, F1 and F2. In the 'C' column, label the DNA bands contributed by the mother with 'M' and the DNA bands contributed by the father with 'F.'

Guida verificata passo dopo passo
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Step 1: Understand that a child inherits one allele (DNA band) from the mother and one allele from the father for each gene. Therefore, for each gene, the child's DNA bands should be a combination of one band from the mother and one band from the father.
Step 2: For each gene, compare the child's DNA bands with the mother's bands. Identify which band(s) in the child match the mother's bands. Label these matching bands in the child's column as 'M' to indicate maternal contribution.
Step 3: After labeling the maternal bands, the remaining band(s) in the child's DNA for each gene must have come from the father. Label these remaining bands as 'F' to indicate paternal contribution.
Step 4: Repeat this process for all four genes, ensuring that for each gene, one band is labeled 'M' and the other 'F' in the child's DNA column.
Step 5: Use the labeled paternal bands in the child's DNA to compare with the DNA bands of the two possible fathers (F1 and F2) to help identify which father contributed those bands.

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Mendelian Inheritance and Allele Contribution

Each individual inherits one allele of a gene from each parent. In paternity testing, the child's DNA bands must match one allele from the mother and one from the father. Identifying which bands come from the mother helps isolate the paternal contribution.
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03:03
New Alleles and Migration

DNA Banding Patterns in Gel Electrophoresis

DNA fragments are separated by size using gel electrophoresis, producing distinct bands. Comparing band patterns between individuals reveals shared alleles. Bands present in the child but absent in the mother indicate paternal origin.
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07:40
Methods for Analyzing DNA and RNA

Paternity Testing Using Genetic Markers

Paternity tests analyze multiple genetic loci to determine biological relationships. Matching the child's paternal bands with those of potential fathers helps identify the true father. Consistency across several genes strengthens the accuracy of the test.
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07:11
Mapping with Markers
Pratica correlata
Domanda del libro di testo

The results shown are from a DNA test for four genes used in a paternity identification case. DNA for the mother (M) and her child (C) are shown along with DNA from two possible fathers, F1 and F2. Based on the exclusion principle, is either man excluded as the possible father? Explain.

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The results shown are from a DNA test for four genes used in a paternity identification case. DNA for the mother (M) and her child (C) are shown along with DNA from two possible fathers, F1 and F2. What can you conclude based on the DNA results available?

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