Homework Answers
Tetrad analysis is used to determine the distance between the centromere and the gene or the distance between gene and gene.unordered tetrad is of 3 types - parenatl ditype(PD), non parental ditype (NPD) and tetra type(TT).
here tetrad c is the Parental di type.( there is no crossing over)
Tetrad A and Tetrad F are NPD ( 100% recombinant)
Tetrad B, D, E are tetra type ( 50% recombinant 50% parental)
Here the number has been given for every tetrad.
when the distance between gene is calculated , PD and NPD are considered.
if NPD=PD (approximately )genes are not linked, they are independently assorted. Here PD is 37 and NPD is 36+1= 37.
So, here the loci are not linked.
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QUESTION 9 What is the map distance between lys and val? Tetrad A Tetrad B Tetrad...
Option B "7.5" is for sure incorrect. QUESTION 8 Consider the following data from a cross...
Option B "7.5" is for sure
incorrect.
QUESTION 8 Consider the following data from a cross of a haploid Neurospora that requires lysine (lys-) with a strain requiring valine (val-). How far is the valine locus from the centromere? Tetrad F Tetrad A lys + lys + + val + val | 36 Tetrad B lys + lys val + + + val 12 Tetrad lys val lys val + + + + 37 Tetrad D lys val lys +...
What fragments will be obtained by a trypsin hydrolysis of the following octapeptide? Ala-Val-Trp-Lys-Phe-Gly-Arg-Met A) Ala-Val-Trp-Lys-Phe...
What fragments will be obtained by a trypsin hydrolysis of the following octapeptide? Ala-Val-Trp-Lys-Phe-Gly-Arg-Met A) Ala-Val-Trp-Lys-Phe and Gly-Arg-Met 3) Ala-Val-Trp-Lys-Phe-Gly and Arg-Met - Ala-Val-Trp-Lys and Phe-Gly-Arg and Met ) Ala-Val-Trp-Lys and Phe and Gly-Arg and Met ) Ala-Val-Trp and Lys-Phe-Gly and Arg-Met Bradykinin is a nonapeptide, Arg-Pro-Pro-Gly-Phe-Ser-Pro-Phe-Arg. In addition to one mole of Arg, what peptides are present after hydrolysis of bradykinin with chymotrypsin? A) Arg-Pro-Pro and Gly-Phe and Ser-Pro-Phe B) Pro-Pro-Gly and Phe-Ser-Pro-Phe-Arg C) Arg-Pro-Pro-Gly-Phe and Ser-Pro-Phe ?) Arg-Pro-Pro-Gly-Phe-Ser...
QUESTION 7 4 po In a hypothetical cross of ABX a b, the observed frequencies of...
QUESTION 7 4 po In a hypothetical cross of ABX a b, the observed frequencies of the tetrad classes are 0.60 parental ditype. 0.38 tetratype, and 0.02 nonparental ditype. What is the corrected map distance between the a and b loci? 40 27.5 0.12 25 None of the above
10. The peptide shown has the amino acid sequence: A. Val-Ser-Ile-Glu-Lys B. Lys-Glu-Ile-Ser-Val C. Thr-Asp-Leu-Gln-Arg D....
10. The peptide shown has the amino acid sequence: A. Val-Ser-Ile-Glu-Lys B. Lys-Glu-Ile-Ser-Val C. Thr-Asp-Leu-Gln-Arg D. Val-Asp-Ile-Glu-Arg 11. Which of the following describes the entire three- dimensional structure of a single polypeptide? A. Secondary structure B. Quaternary structure C. Tertiary structure D. Primary structure 12. What is the primary driving force in the formation of protein tertiary structure? A. Energy released when additional ion pairs are formed. B. The exclusion of non-polar substances from aqueous solution. C. The formation of...
the distance between cities A and B on a map is 10in. The distance from city...
the
distance between cities A and B on a map is 10in. The distance from
city C, is 8.25in, and the distance from C to A is 13in. If the
bearing from A to B is N79°, the bearing from C to A. Round to the
nearest tenth of a degree.
The bearing from city C to city A is approximately N/S ( ° )
W/E
The distance between cities A and B on a map is 10 in. The...
Use the following genetic map, where the numbers indicate map units between adjacent loci : a---15...
Use the following genetic map, where the numbers indicate map units between adjacent loci : a---15 cM---b---5 cM---c---20 cM---d---30 cM---e, to answer the question. What is the frequency of gametes with the genotype aBCDe from a completely heterozygous individual with the genotype ABCDE / abcde?
Can you explain how to formulate map units in these types of questions? I have a...
Can you explain how to formulate map units in these types of
questions?
I have a answered but i would like help with part B.
2. Recombination frequency is given below for several gene pairs. Create a linkage map for these genes, showing the map unit distance between loci. j, k 12%; k, 1 6%; j, m 9%; 1, m 15% 3. In guinea pigs, black (B) is dominant to brown (b), and solid color (S) is dominant to spotted...
genetics-please show all work 8. (9 pts) A series of two-point crosses were carried out among...
genetics-please show all work
8. (9 pts) A series of two-point crosses were carried out among six loci (a, b, c, d, e and f), producing the following recombination frequencies. The six loci map to three different linkage groups. Map the six loci, showing their linkage groups (you can use a single line for each linkage group), the order of the loci in each linkage group, and the distances between the loci of each group. If there is only one...
9. You have been asked to determine the map distances between two SNP loci R and Q in wheat. The following cross was undertaken: RARG QcQrx RARA QcQc and yielded progeny as shown below. RARA QrQc RAR...
9. You have been asked to determine the map distances between two SNP loci R and Q in wheat. The following cross was undertaken: RARG QcQrx RARA QcQc and yielded progeny as shown below. RARA QrQc RARA QcQc 259 235 242 264 What are the genotypes of the parents of this cross? a) Give the map distance in centiMorgans between these two loci. (Show your work) c) Can you reject hypothesis of no linkage using a Chi-square test? (Show your...
36. The recessive autosomal maize genes sh and bz are linked and 40 map units apart,...
36. The recessive autosomal maize genes sh and bz are linked and 40 map units apart, If a plant with the genotype sh bz/ sh bz is selfed, what percentage of the progeny will be double recessive? 37. If the recombination frequency between the linked autosomal genes A and B in Drosophila is 15 percent, what phenotypic frequencies would you expect from a cross AB/ab females x AB/ab males? (There is no crossing over in Drosophila males). 38. In the...
Option B "7.5" is for sure
incorrect.
QUESTION 8 Consider the following data from a cross of a haploid Neurospora that requires lysine (lys-) with a strain requiring valine (val-). How far is the valine locus from the centromere? Tetrad F Tetrad A lys + lys + + val + val | 36 Tetrad B lys + lys val + + + val 12 Tetrad lys val lys val + + + + 37 Tetrad D lys val lys +...
What fragments will be obtained by a trypsin hydrolysis of the following octapeptide? Ala-Val-Trp-Lys-Phe-Gly-Arg-Met A) Ala-Val-Trp-Lys-Phe and Gly-Arg-Met 3) Ala-Val-Trp-Lys-Phe-Gly and Arg-Met - Ala-Val-Trp-Lys and Phe-Gly-Arg and Met ) Ala-Val-Trp-Lys and Phe and Gly-Arg and Met ) Ala-Val-Trp and Lys-Phe-Gly and Arg-Met Bradykinin is a nonapeptide, Arg-Pro-Pro-Gly-Phe-Ser-Pro-Phe-Arg. In addition to one mole of Arg, what peptides are present after hydrolysis of bradykinin with chymotrypsin? A) Arg-Pro-Pro and Gly-Phe and Ser-Pro-Phe B) Pro-Pro-Gly and Phe-Ser-Pro-Phe-Arg C) Arg-Pro-Pro-Gly-Phe and Ser-Pro-Phe ?) Arg-Pro-Pro-Gly-Phe-Ser...
QUESTION 7 4 po In a hypothetical cross of ABX a b, the observed frequencies of the tetrad classes are 0.60 parental ditype. 0.38 tetratype, and 0.02 nonparental ditype. What is the corrected map distance between the a and b loci? 40 27.5 0.12 25 None of the above
10. The peptide shown has the amino acid sequence: A. Val-Ser-Ile-Glu-Lys B. Lys-Glu-Ile-Ser-Val C. Thr-Asp-Leu-Gln-Arg D. Val-Asp-Ile-Glu-Arg 11. Which of the following describes the entire three- dimensional structure of a single polypeptide? A. Secondary structure B. Quaternary structure C. Tertiary structure D. Primary structure 12. What is the primary driving force in the formation of protein tertiary structure? A. Energy released when additional ion pairs are formed. B. The exclusion of non-polar substances from aqueous solution. C. The formation of...
the
distance between cities A and B on a map is 10in. The distance from
city C, is 8.25in, and the distance from C to A is 13in. If the
bearing from A to B is N79°, the bearing from C to A. Round to the
nearest tenth of a degree.
The bearing from city C to city A is approximately N/S ( ° )
W/E
The distance between cities A and B on a map is 10 in. The...
Can you explain how to formulate map units in these types of
questions?
I have a answered but i would like help with part B.
2. Recombination frequency is given below for several gene pairs. Create a linkage map for these genes, showing the map unit distance between loci. j, k 12%; k, 1 6%; j, m 9%; 1, m 15% 3. In guinea pigs, black (B) is dominant to brown (b), and solid color (S) is dominant to spotted...
genetics-please show all work
8. (9 pts) A series of two-point crosses were carried out among six loci (a, b, c, d, e and f), producing the following recombination frequencies. The six loci map to three different linkage groups. Map the six loci, showing their linkage groups (you can use a single line for each linkage group), the order of the loci in each linkage group, and the distances between the loci of each group. If there is only one...
9. You have been asked to determine the map distances between two SNP loci R and Q in wheat. The following cross was undertaken: RARG QcQrx RARA QcQc and yielded progeny as shown below. RARA QrQc RARA QcQc 259 235 242 264 What are the genotypes of the parents of this cross? a) Give the map distance in centiMorgans between these two loci. (Show your work) c) Can you reject hypothesis of no linkage using a Chi-square test? (Show your...
36. The recessive autosomal maize genes sh and bz are linked and 40 map units apart, If a plant with the genotype sh bz/ sh bz is selfed, what percentage of the progeny will be double recessive? 37. If the recombination frequency between the linked autosomal genes A and B in Drosophila is 15 percent, what phenotypic frequencies would you expect from a cross AB/ab females x AB/ab males? (There is no crossing over in Drosophila males). 38. In the...
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