6. Individuals who possess a C allele at the Rs429358 SNP, located in the 4th Exon of the ApoE gene, are more likely to have a variant at the ApOE proteinthat can increase the risk of Alzheimer's disease over a T allele. You are running a set of samples on a SNP chip and determine that your population has 2C individuals, 16 CT individuals, and 32 TT individuals.The C and T alleles in the ApoE gene are segregating at the frequencies observed in the 1st generation you observe the population. If you assume astandard Wright-Fisher model of genetic dnit, what is tho expocted probabilily of eventual fixation of the T allele? is this a certain outcome?

The Wright-Fisher model examines the alteration in frequencies of two alleles at a single diploid…

Individuals who possess a C allele at the R$429358 SNP, located in the 4th Exon of the ApoE gene, are more likely to have a variant at the ApoE protein that can increase the risk of Alzheimer's disease over a T allele. You are running a set of samples on a SNP chip and determine that your population has 2 CC individuals, 16 CT individuals, and 32 TT individuals. The C and T alleles in the ApoE gene are segregating at the frequencies observed in the 1st generation you observe the population. If you assume a standard Wright-Fisher model of genetic drift, what is the expected probability of eventual fixation of the T allele? Is this a certain outcome?

Individuals who possess a C allele at the R$429358 SNP, located in the 4th Exon of the ApoE gene, are more likely to have a variant at the ApoE protein that can increase the risk of Alzheimer's disease over a T allele. You are running a set of samples on a SNP chip and determine that your population has 2 CC individuals, 16 CT individuals, and 32 TT individuals. The C and T alleles in the ApoE gene are segregating at the frequencies observed in the 1st generation you observe the population. If you assume a standard Wright-Fisher model of genetic drift, what is the expected probability of eventual fixation of the T allele? Is this a certain outcome?

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter18: Dna Technologies: Making And Using Genetically Altered Organisms, And Other Applications

Section: Chapter Questions

Problem 1ITD: You learned in the chapter that an STR locus is a locus where alleles differ in the number of copies...

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You learned in the chapter that an STR locus is a locus where alleles differ in the number of copies of a short, tandemly repeated DNA sequence. PCR is used to determine the number of alleles present, as shown by the size of the DNA fragment amplified. In the Figure below are the results of PCR analysis for STR alleles at a locus where the repeat unit length is 9 bp, and alleles are known that have 5 to 11 copies of the repeat. Given the STR alleles present in the adults, state whether each of the four juveniles could or could not be an off-spring of those two adults. Explain your answers.
The use of nucleotide sequence data to measure genetic variabilityis complicated by the fact that the genes of many eukaryotesare complex in organization and contain 5' and 3' flankingregions as well as introns. Researchers have compared thenucleotide sequence of two cloned alleles of the y-globin gene from asingle individual and found a variation of 1 percent. Those differencesinclude 13 substitutions of one nucleotide for anotherand three short DNA segments that have been inserted in oneallele or deleted in the other. None of the changes takes placein the gene’s exons (coding regions). Why do you think this isso, and should it change our concept of genetic variation?
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.
With the information that a Wright- Fisher population have a size of 10,000 and assume that mutation rate is 2.5x10-8 per site per generation. What is the probability of difference between the two sequences that were randomly taken from the population? Show all working and explanation.
Answer the following MCQs: 1:This database is most likely to have data about gene expression. GenBank BLAST dbEST RefSeq PDB 2: Dot matris noise reduction: window size is 7 by 7 and mismatch is 2. What is the minimal number of matches in this window that allows us to place the dot? 2 3 1 5 4 3: Find the optimal global alignment of two DNA sequences _ACAAC and AC. Match = 2, mismatch =0, gap opening =-3, gap extention=-1. What is the total score of alignment? 2 -1 0 -3 1
In DNA-hybridization experiments on six species of plants in the genus Vicia, DNA was isolated from each of the six species, denatured by heating, and sheared into small fragments (W. Y. Chooi. 1971. Genetics 68:213–230). In one experiment, DNA from each species and from E. coli was allowed to renature. The graph shows the results of this renaturation experiment. Q. Notice that, for the Vicia species, the rate of renaturation is much faster in the first hour and then slows down. What might cause this initial rapid renaturation and the subsequent slowdown?
. Use the following sequence data to assign haplotypes and build a haplotype network for a 200 bp variable region that is sequenced from eight individuals. Polymorphic nucleotide positions are shown. Δ is a 1 bp deletion. Explain the logic supporting the network. If there are different nucleotide changes at one position, indicate the different changes on your network. Individual 24 56 92 119 146 172 haplotype 1 A C A T G G A 2 T C Δ C G G 3 A G A T A T 4 A G A T G T 5 A C Δ C G G 6 A G A T G G 7 A G A T A T 8 C C Δ C G G
When an Avidian (with a genome size of 50 sites) reproduces with a 10% per site mutation rate, and if the number of mutations per genome is Poisson distributed, then what is the most likely outcome? Possible answers: 4 per genome is most likely, 5 per genome is most likely, 4 mutations per genome and 5 mutations per genome are equally likely, A number other than 4 and/or 5 mutations per genome is most likely
which of the following statements about genome-wide association studies (GWAS) is correct? A) involves scanning the genomes of thousands of unrelated individuals with a particular mutation and comparing them with the genomes of individuals who do not have the mutation. B) involves scanning the genomes of thousands of unrelated individuals with a particular disease and comparing them with the genomes of individuals who do not have the disease C) attempt to identify genes that influence mutation risk D) attempt to identify genes that influence disease risk E) involves scanning the genomes of thousands of unrelated individuals with a particular disease and comparing them with the genomes of individuals who do not have the disease and GWAS attempt to identify genes that influence disease risk
If you compare the frequency of the sixteen pos-sible dinucleotide sequences in the E. coli and humangenomes, there are no striking differences except for onedinucleotide, 5ʹ-CG-3ʹ. The frequency of CG dinucleotidesin the human genome is significantly lower than in E. coliand significantly lower than expected by chance. Why doyou suppose that CG dinucleotides are underrepresentedin the human genome?
n class we investigated the reason cystic fibrosis is maintained in the human population in higher frequency than we expected given the deleterious effects of being homozygous at the CFTR gene. We calculated the actual mutation rate of the CFTR gene to be 6.7 x 10-7. The mutation rate expected under mutation-selection balance was 4 x 10-4. What is the most plausible explanation as to why cystic fibrosis is maintained in the human population at a higher frequency than we expect? a. Negative selection against the CFTR deleterious alleles is too weak to eliminate the alleles from the human population. b. Positive selection for the CFTR deleterious alleles is likely occurring in response to some other selective pressure in the human population, possibly resistance to typhoid fever. c. The CFTR gene has an exceedingly low mutation rate causing humans to have no genetic variation at that gene. d. The CFTR gene has an exceedingly high mutation rate and that is…
The use of nucleotide sequence data to measure genetic variability is complicated by the fact that the genes of higher eukaryotes are complex in organization and contain 5′ and 3′ flanking regions as well as introns. Researchers have compared the nucleotide sequence of two cloned alleles of the g-globin gene from a single individual and found a variation of 1 percent. Those differences include 13 substitutions of one nucleotide for another and 3 short DNA segments that have been inserted in one allele or deleted in the other. None of the changes takes place in the gene’s exons (coding regions). Why do you think this is so, and should it change our concept of genetic variation?