1. What advantages do anonymous DNA markers afford for genetic mapping as opposed to traditional allelic markers associated with visible phenotypes? What are the disadvantages of anonymous DNA markers for mapping? 2. Would you be more likely to find SNPs in the protein-coding or in the noncoding DNA of the human genome

1. What advantages do anonymous DNA markers afford for genetic mapping as opposed to traditional allelic markers associated with visible phenotypes? What are the disadvantages of anonymous DNA markers for mapping? 2. Would you be more likely to find SNPs in the protein-coding or in the noncoding DNA of the human genome

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter12: Mendel's Experiments And Heredity

Section: Chapter Questions

Problem 29CTQ: Why is it more efficient to perform a test cross with a homozygous recessive donor than a homozygous...

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1. a) If you were at risk of a fatal disease such as Huntington’s disease and only the 95% accurate preliminary genetic test was available, would you take the test? After all, 95% of the time the test would tell you whether you would eventually get Huntington’s disease or whether you did not have to worry about getting this disease. b) The linkage distance between the DNA sequence used in the test and the actual Huntington’ disease locus was 5%. In a large sample of the Venezuelan family, what percentage of people would inherit the DNA sequence but not the Huntington’s allele (i.e. be a false positive test for Huntington’s)? What percentage of that large Venezuelan family would not inherit the DNA sequence but would inherit the Huntington’s allele (i.e., be a false negative test for Huntington’s)?
4) The government of Iceland has built a database which contains genetic informaiton about individuals using SNP analysis and other methods, which can be used to help diagnose pre-disposition to genetic diseases and other conditions. What are some ethical issues that are raised by compiling such a database?
1. Why would multi-gene families complicate things in terms of being sure of which member of the family was responsible for a particular phenotype? 2. How could multi-genes families complicate things in terms of using CRISPR to knock out a target gene and achieve a target phenotype?
Why is it more efficient to perform a test cross with a homozygous recessive donor than a homozygous dominant donor? How could the same information still he found with a homozygous dominant donor?
1. What do we need to consider in choosing the best method in introducing recombinant DNA? Compare and contrast at least three considerations (in terms of methods or requirements) in introducing recombinant DNA in plant calli vs animal cell lines. Answer this comprehensively and clearly.
1. There are two different variations at STR locus THO1. Where did these variations come from? b) The STR locus D21S11 only has one variation. Why?
1. What are the possible effect or consequences if the sequence homology is ignored in homologous recombination? List all possible consequence and explain it comprehensively.
1. What are the considerations we need to consider in introducing recombinant DNA in plant calli and in animal cell lines? (Give at least three considerations) Explain and answer this comprehensively.
1. What are the considerations we need to consider in choosing methods in introducing recombinant DNA in plant calli vs in animal cell lines? (Give at least three considerations) Explain and answer this comprehensively.
6) If you had the ability to do gene editing with ONE gene for the betterment of human kind, which one would you choose, and why? Assume you could either change an abnormal allele associated with a disease, such as the cystin gene associated with Cystic Fibrosis to its normal wild type, or add a pre-existing human allele to a genome
1.) What characteristics of VNTR and STR make them useful for DNA fingerprinting? 2.) How does PCR minimize the problems associated with degraded DNA? 3.) What factors can cause DNA to become degraded? 4.) If Ethidium bromide was not added to a gel, what would happen? 5.) How can you tell if an individual is heterozygous for the D1S80 marker? 6.) If a negative control produces a band, what does this indicate? 7.) In an experiment, a student’s sample amplified for D1S80 produced 3 bands. It was the only DNA sample run on the gel. The student knows that there was no problem with the Thermocycler or primers because the other students in the class had the expected results of only one or two bands. What is the most likely explanation for these results?
1. You are studying a new gene “X” that you think controls skin color in Bearded Dragons. In order to determine what gene X does, you need lots of gene X DNA to work with. So, you decide to amplify it through the process known as PCR. You have a forward and a reverse primer that have been designed to gene Xf – a gene in frogs that is similar to the one found in the Bearded Dragon. You are pretty sure that these two primers will work in Bearded Dragons, so you decide to go ahead with the PCR. In frogs, the Forward Xf primer binds gene Xf between nucleotides 32 and 47. The Reverse Xf primer binds between nucleotides 1110 and 1135. a. What size PCR product would these two primers create if they amplified the frog gene Xf?? 3. A fellow lab worker brings you DNA containing what might be a similar gene in Leopard Geckos (XG). She asks you to see if you can amplify it using the same primers you used in frogs and the Bearded Dragon. You run the PCR and then analyze the product by…