Suppose the interference value (I) between loci A and B is the same as the interference...
Suppose the interference value (I) between loci A and B is the same as the interference between loci B and C, and the order of the loci on the same autosome is A-B-C. If I = 0.95, then a recombination between loci A and B means:
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A. a recombination between loci B and C has an approximately 5% probability.
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B. a recombination between loci B and C has a near 100% probability.
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C. a recombination between loci B and C has an approximately 50% probability.
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D. a recombination between loci B and C has a near 0% probability.
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E. the recombination fraction between A and B is equal to the recombination fraction between B and C.
Homework Answers
Ans: (D) a recombination between loci B and C has a near 0% probability. A recombination usually occurs between two loci on a particular chromosome if the genes are copied to the gametes at those two specific loci which has been derived from two different parental chromosomes. Therefore there occurs a recombination between two loci on a specific chromosome, only if there exists an odd number of crossovers taking place between them.
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Suppose the interference value (I) between loci A and B is the
same as the interference...
Suppose the interference value (I) between loci A and B is the same as the interference...
Suppose the interference value (I) between loci A and B is the same as the interference between loci B and C, and the order of the loci on the same autosome is A-B-C. If I = 0.05, then a recombination between loci A and B implies: A. the recombination fraction between A and B is equal to the recombination fraction between B and C. B. a recombination between loci B and C has an apporixmately 5% probability C. a recombination...
Problem I A series of two-point crosses were carried out among seven loci (a, b, c,...
Problem I A series of two-point crosses were carried out among seven loci (a, b, c, d, e, f, and g), producing the following recombination frequencies. Map the seven loci, showing their linkage groups, the order of the loci in each linkage group, and distances between the loci of each linkage group. Loci % Recombination Loci % Recombination a - b 50 c - d 50 a - c 50 c - e 26 a - d 12 c -...
SO/ do no 2. A series of 2-point crosses were carried out among 7 loci (a, b, c, d, e, f, and g. producing the following recombination frequencies. Map the 7 loci, showing their linkage groups, t...
SO/ do no 2. A series of 2-point crosses were carried out among 7 loci (a, b, c, d, e, f, and g. producing the following recombination frequencies. Map the 7 loci, showing their linkage groups, the order of the loci in each linkage group, and distances berween the loci of each group. () | % Reco Loci % Recombination 50 26 50 50 50 50 a- b a-c a-d a- e 50 50 12 50 50 4 10 50...
Loci close to the centromere have: a. No recombination between them b. Lots of recombination between...
Loci close to the centromere have: a. No recombination between them b. Lots of recombination between them c. Some degree of recombination between them d. Independent assortment e. Independent segregation
The genetic map between four loci is given: P—2cM—Q-1cM-R---6cM---S The probability of recombination between P and...
The genetic map between four loci is given: P—2cM—Q-1cM-R---6cM---S The probability of recombination between P and S is Select one: a. 0.009 b. 0.012 c. 0.00012 d. 0.09 e. 0.9
Here is a genetic map of four loci on the same chromosome; what is the probability...
Here is a genetic map of four loci on the same chromosome; what is the probability of a triple crossover between them? A---2cM—B—3.5cM—C—1cM-----4.5cM---D a. 0.315 b. 0.00315 c. 3.15 x 10-3 d. 3.15 x 10-7 e. None of the above
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...
Genetics b. (16 pts) A recombination event occurs between two DNA strands flanked by markers "A"...
Genetics
b. (16 pts) A recombination event occurs between two DNA strands flanked by markers "A" and "B" on one strand and different alleles of the same loci on the other s and "b"). Between these loci is the lac operon. The top strand has single missence mutations in both the lacž and lacY genes. During the recombination procs following Holliday intermediate structure is gencrat the lac I lacz lacY lac I lacZ lacY*
Linkage Disequilibrium a) Mention two processes that may cause LD. b) Why may the extent of...
Linkage Disequilibrium a) Mention two processes that may cause LD. b) Why may the extent of LD vary over a chromosome? c) After how many generations have the LD between two loci with a recombination rate of 0.1 declined to 50% of the starting LD? d) Calculate LD between two biallelic loci (alleles A/a and B/b) in a population that has just been formed by mixing equal number of individuals from two source populations with the following allele frequencies: Population...
5. Quantitative trait loci(QTL) are: The loci that contribute all of the variation in a continuous...
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SO/ do no 2. A series of 2-point crosses were carried out among 7 loci (a, b, c, d, e, f, and g. producing the following recombination frequencies. Map the 7 loci, showing their linkage groups, the order of the loci in each linkage group, and distances berween the loci of each group. () | % Reco Loci % Recombination 50 26 50 50 50 50 a- b a-c a-d a- e 50 50 12 50 50 4 10 50...
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...
Genetics
b. (16 pts) A recombination event occurs between two DNA strands flanked by markers "A" and "B" on one strand and different alleles of the same loci on the other s and "b"). Between these loci is the lac operon. The top strand has single missence mutations in both the lacž and lacY genes. During the recombination procs following Holliday intermediate structure is gencrat the lac I lacz lacY lac I lacZ lacY*
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