Homework Answers
Let the alleles be - S15 and S18.
Genotype of Josiah = S15S18 and that of Amari = S18S18.
If we make a cross, we will get two outcomes - S15S18 and S18S18.
Correct options will be - 2nd and 5th.
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Josiah has two different STR alleles, one of 15 repeats and the other of 18 repeats....
Here is an example using 3 CODIS STR results. DNA evidence was found at a crime...
Here is an example using 3 CODIS STR results. DNA evidence was
found at a crime scene. Due to the poor quality of the DNA sample,
only 3 of the 13 CODIS STRs could be determined. The table below
lists the analytical results for the three STRs in the second and
third columns (Allele A and Allele B).
Here is an example using 3 CODIS STR results. DNA evidence was found at a crime scene. Due to the poor quality...
3. Consider two loci. One locus has two alleles, A1 and A2 at frequencies p =...
3. Consider two loci. One locus has two alleles, A1 and A2 at frequencies p = 0.3 and q = 0.7, respectively, and the other locus has two alleles, B1 and B2 at frequencies r = 0.4 and s = 0.6. (A) What are the possible genotypes of gametes made by organisms in this population? (B) What will be the frequencies of gametes produced by individuals in this population if the two loci are in gametic equilibrium (meaning that they...
(16 pts.) The gel shown below shows patterns observed for a STR (short tandem repeat) locus among...
(16 pts.) The gel shown below shows patterns observed for a STR (short tandem repeat) locus among four sets of parents (1-8) and four children (A-D). One child comes from each set of parents. 3. Why are there two bands for each parent? a. b. Although all the people shown here have two bands, it is possible (and not unusual) fora person to have only one band. Explain how this could happen. Consider earlier discussions on extensions to Mendelian genetics....
A suspect in a rape case has been typed for three STR loci. His alleles match...
A suspect in a rape case has been typed for three STR loci. His alleles match those of the evidentiary sample (semen taken from the rape victim) for each locus. He is a heterozygote for the first two loci and a homozygote for the third. The allele frequencies for locus 1 in the general population are .05 and .10. For locus 2 they are .07 and .02. for locus 3, the allele frequency in the general population is .08. what...
a) The trait for eye color in a population has two alleles at one locus. The...
a) The trait for eye color in a population has two alleles at one locus. The frequency of the homozygous dominant is 0.1521. If the population is in Hardy-Weinburg equilibrium, what is the frequency of the recessive allele in the population? b) The trait for lactose tolerance in a population has two alleles at one locus. The lactose tolerance trait is dominant and the lactose intolerance is recessive. The frequency of the lactose tolerance phenotype is 0.75. If the population...
In 1994, Congress passed the DNA Identification Act which authorized the FBI to do 2 things:...
In 1994, Congress passed the DNA Identification Act which authorized the FBI to do 2 things: (1) create and maintain a national DNA database, and (2) establish standards for forensic DNA testing. Because the human genome is full of DNA tandem repeats and because they vary in the number of contiguous repeat units, it was decided to use tandem repeats to build the DNA database. In 1996, 13 loci were chosen to be the core short tandem repeats (STR) for...
1.2 According to the Mendel's second law, alleles of two different genes assort independent of each...
1.2 According to the Mendel's second law, alleles of two different genes assort independent of each other. Thus, the presence of a specific allele at a first locus cannot tell what the allele is at the second locus on the same chromosome. But often times, if we know the allele at the first locus, we can predict that one allele would appear at a higher probability than expected according to Mendel's second law. This type of allelic association is termed
Consider a locus of interest that has two alleles: A and a. A diploid individual carrying...
Consider a locus of interest that has two alleles: A and a. A diploid individual carrying these alleles can have one of three genotypes: AA, Aa, or aa; a population will consist of some combination of AA, Aa, and aa individuals. The relatively frequency of each of these genotypes makes up the population's structure. Hardy and Weinberg independently figured out that, in the absence of forces that cause evolutionary change, the population structure will 'settle' or default to equilibrium values,...
For these questions, you are using the A, B, and O to represent the alleles in...
For these questions, you are using the A, B, and O to represent the alleles in this example. The ABO blood system works in a Mendelian fashion, but has 3 possible alleles at one locus (A, B, and O alleles). Each person can have only 2 of those alleles in their genotype. A and B are both dominant (and so can be co-dominant), and O is recessive to both A and B. So, for example, if you have B blood...
allele for achromatopsia so prevalent in this population u ule typhoon and famine represent? What has...
allele for achromatopsia so prevalent in this population u ule typhoon and famine represent? What has made the frequency of tne gene pool after the typhoon 5. Most of our DNA sequence is identical, however there are places in the genome quence can vary from person to person. These variations are where thee sts use one type of highly variable polymorphisms for DNA analysis. STRs (short called polymorphisms. Forensic em repeats) are short (2-5 bp) sequences of DNA that are...
Here is an example using 3 CODIS STR results. DNA evidence was
found at a crime scene. Due to the poor quality of the DNA sample,
only 3 of the 13 CODIS STRs could be determined. The table below
lists the analytical results for the three STRs in the second and
third columns (Allele A and Allele B).
Here is an example using 3 CODIS STR results. DNA evidence was found at a crime scene. Due to the poor quality...
3. Consider two loci. One locus has two alleles, A1 and A2 at frequencies p = 0.3 and q = 0.7, respectively, and the other locus has two alleles, B1 and B2 at frequencies r = 0.4 and s = 0.6. (A) What are the possible genotypes of gametes made by organisms in this population? (B) What will be the frequencies of gametes produced by individuals in this population if the two loci are in gametic equilibrium (meaning that they...
(16 pts.) The gel shown below shows patterns observed for a STR (short tandem repeat) locus among four sets of parents (1-8) and four children (A-D). One child comes from each set of parents. 3. Why are there two bands for each parent? a. b. Although all the people shown here have two bands, it is possible (and not unusual) fora person to have only one band. Explain how this could happen. Consider earlier discussions on extensions to Mendelian genetics....
A suspect in a rape case has been typed for three STR loci. His alleles match those of the evidentiary sample (semen taken from the rape victim) for each locus. He is a heterozygote for the first two loci and a homozygote for the third. The allele frequencies for locus 1 in the general population are .05 and .10. For locus 2 they are .07 and .02. for locus 3, the allele frequency in the general population is .08. what...
In 1994, Congress passed the DNA Identification Act which authorized the FBI to do 2 things: (1) create and maintain a national DNA database, and (2) establish standards for forensic DNA testing. Because the human genome is full of DNA tandem repeats and because they vary in the number of contiguous repeat units, it was decided to use tandem repeats to build the DNA database. In 1996, 13 loci were chosen to be the core short tandem repeats (STR) for...
1.2 According to the Mendel's second law, alleles of two different genes assort independent of each other. Thus, the presence of a specific allele at a first locus cannot tell what the allele is at the second locus on the same chromosome. But often times, if we know the allele at the first locus, we can predict that one allele would appear at a higher probability than expected according to Mendel's second law. This type of allelic association is termed
Consider a locus of interest that has two alleles: A and a. A diploid individual carrying these alleles can have one of three genotypes: AA, Aa, or aa; a population will consist of some combination of AA, Aa, and aa individuals. The relatively frequency of each of these genotypes makes up the population's structure. Hardy and Weinberg independently figured out that, in the absence of forces that cause evolutionary change, the population structure will 'settle' or default to equilibrium values,...
allele for achromatopsia so prevalent in this population u ule typhoon and famine represent? What has made the frequency of tne gene pool after the typhoon 5. Most of our DNA sequence is identical, however there are places in the genome quence can vary from person to person. These variations are where thee sts use one type of highly variable polymorphisms for DNA analysis. STRs (short called polymorphisms. Forensic em repeats) are short (2-5 bp) sequences of DNA that are...
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