Tutorial Questions on Linkage
Label the groups of progeny indicating which represent the parental combinations and which are recombinants.
ii) Calculate the map distances and draw a map to indicate the arrangement of these three genes.
iii) Calculate the interference and indicate what this value means
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please answer both questions. Researchers studied the linkage of three genes affecting kidney function in mice:...
please answer both questions.
Researchers studied the linkage of three genes affecting kidney function in mice: cyp, ren, and tu. They carried out a series of three point testcrosses, mating mice that were heterozygous at all three loci with mice that were homozygous for the recessive alleles at all three loci. The following table lists the results of the testcrosses. Plusses represent dominant wild-type alleles. Phenotype Number ren 310 сур + 320 сур ren tu 90 + + 55 +...
23. R. A. Emerson crossed two different pure breeding lines type Fl that was heterozygous for...
23. R. A. Emerson crossed two different pure breeding lines type Fl that was heterozygous for three alleles that determine recessive phenotypes. Terent pure-breeding lines of corn and obtained a phenotypically wild- anther, br, brachytic; and f, fine. He testcrossed the F1 with a tester that was homoly mine recessive phenotypes: an determines the three genes and obtained these progeny phenoty with a tester that was homozygous recessive for ained these progeny phenotypes: 355 anther: 339 brachytic, fine: 88 completely...
Please show work. 2. You mate a female fly with a black body, purple eyes, and...
Please show work.
2. You mate a female fly with a black body, purple eyes, and vestigial wing size to a wild- type male. These three alleles are located on chromosome II (autosome) in Drosophila. You testcross one of the Fi females to a male with all three mutations and record the results from the testcross in following table. Phenotype # of each phenotype Body color eye color wing size red red red red 900 le normal vestigial 90 50...
2. In a testcross of a female Drosophila heterozygous for three linked recessive genes, the following...
2. In a testcross of a female Drosophila heterozygous for three linked recessive genes, the following phenotypes of progeny were obtained: 442 435 at bt d a bd at bd a bt d at bd a bt di at bt dt a bd Total ONEN 1000 A) Write out the parental genotype of the heterozygous parent indicating the correct allele configuration and gene order B) Construct a map of the genes and indicate the map-distances based on the data shown...
31. ANALYSIS Priscilla Lane and Margaret Green studied the linkage relations of three genes affecting coat...
31. ANALYSIS Priscilla Lane and Margaret Green studied the linkage relations of three genes affecting coat color in mice: mahogany (mg), agouti (a), and ragged (Rg). They carried out a series of three-point crosses, mating mice that were heterozygous at all three loci with mice that were homozygous for the recessive alleles at these loci (P W. Lane and M. C. Green. 1960. Journal of Heredity 51:228-230). The following table lists the results of the testcrosses. Number Phenotype Rg 1...
genetics problem 3. (50) Two different pure-breeding plants were crossed and F1 gave a wild-type which was test-crossed. The following numbers were obtained for F2, focusing on three unusual chara...
genetics problem
3. (50) Two different pure-breeding plants were crossed and F1 gave a wild-type which was test-crossed. The following numbers were obtained for F2, focusing on three unusual characteristics: height of the plant, color of the flower, surface of fruit: 150 completely wild type; 122 small, white, rough; 571 white, rough; 603 small; 36 rough; 29 smal, white; 4 white; 5 small, rough. a. What were the genotypes of the parental lines? b. Draw a linkage map for the...
Table 7.2 Phenotype # of each phenotype All mutant (parental) / Wild type (parental) Mutant veins...
Table 7.2 Phenotype # of each phenotype All mutant (parental) / Wild type (parental) Mutant veins and body color / / / / / / Mutant bristles Mutant veins and bristles Mutant body color Mutant body color and bristles Mutant veins / / / Practice 7.2. 7.2.3. Sketch a genetic map indicating the relative loci for each of these three alleles, and indicate the approximate map distance between each locus. 7.2.4. Calculate crossover interference (1-1-C) 7.2.4. Is it a negative...
By analyzing the gametes from a trihybrid fruit fly that is heterozygous for three linked genes...
By analyzing the gametes from a trihybrid fruit fly that is heterozygous for three linked genes (AaBbDd), you obtain the following data: Organize the 8 haploid genotypes into pairs that correspond to parentals, double crossovers (DCO) and each of the two types of single crossovers (SCO). Draw a map showing the order of the three genes on the chromosome. Label the map to indicate the distances (in centimorgans or map-units) between the gene in the middle and the genes on...
Drosophila T a heterozyg chromosome 2), and hot tamale Cht). 301 307 46 36 ap ht...
Drosophila
T a heterozyg chromosome 2), and hot tamale Cht). 301 307 46 36 ap ht + 41 ap + b ht h 리)5 4. Black body (b/b), curved wing(c/e), and purple eye color (pr/pr) are recessive traits known to be on chromosome 2 in Drosophila. A testcross of a heterozygous female for all 3 genes was crossed to a black bodied, curved wing. purple eyed male fly and yielded the following progeny Phenotype class Number Type Phenotype class Number...
2. The allele b gives Drosophila flies a black body, and bt gives brown, the wild-type...
2. The allele b gives Drosophila flies a black body, and bt gives brown, the wild-type phenotype. The allele wx of a separate gene gives waxy wings, and wx+ gives nonwaxy, the wild-type phenotype. The allele cn of a third gene gives cinnabar eyes, and cn* gives red, the wild-type phenotype. A female heterozygous for these three genes is testcrossed, and 1000 progeny are classified as follows: 5 wild type, 6 black waxy cinnabar, 69 waxy cinnabar, 67 black, 382...
please answer both questions.
Researchers studied the linkage of three genes affecting kidney function in mice: cyp, ren, and tu. They carried out a series of three point testcrosses, mating mice that were heterozygous at all three loci with mice that were homozygous for the recessive alleles at all three loci. The following table lists the results of the testcrosses. Plusses represent dominant wild-type alleles. Phenotype Number ren 310 сур + 320 сур ren tu 90 + + 55 +...
23. R. A. Emerson crossed two different pure breeding lines type Fl that was heterozygous for three alleles that determine recessive phenotypes. Terent pure-breeding lines of corn and obtained a phenotypically wild- anther, br, brachytic; and f, fine. He testcrossed the F1 with a tester that was homoly mine recessive phenotypes: an determines the three genes and obtained these progeny phenoty with a tester that was homozygous recessive for ained these progeny phenotypes: 355 anther: 339 brachytic, fine: 88 completely...
Please show work.
2. You mate a female fly with a black body, purple eyes, and vestigial wing size to a wild- type male. These three alleles are located on chromosome II (autosome) in Drosophila. You testcross one of the Fi females to a male with all three mutations and record the results from the testcross in following table. Phenotype # of each phenotype Body color eye color wing size red red red red 900 le normal vestigial 90 50...
2. In a testcross of a female Drosophila heterozygous for three linked recessive genes, the following phenotypes of progeny were obtained: 442 435 at bt d a bd at bd a bt d at bd a bt di at bt dt a bd Total ONEN 1000 A) Write out the parental genotype of the heterozygous parent indicating the correct allele configuration and gene order B) Construct a map of the genes and indicate the map-distances based on the data shown...
31. ANALYSIS Priscilla Lane and Margaret Green studied the linkage relations of three genes affecting coat color in mice: mahogany (mg), agouti (a), and ragged (Rg). They carried out a series of three-point crosses, mating mice that were heterozygous at all three loci with mice that were homozygous for the recessive alleles at these loci (P W. Lane and M. C. Green. 1960. Journal of Heredity 51:228-230). The following table lists the results of the testcrosses. Number Phenotype Rg 1...
genetics problem
3. (50) Two different pure-breeding plants were crossed and F1 gave a wild-type which was test-crossed. The following numbers were obtained for F2, focusing on three unusual characteristics: height of the plant, color of the flower, surface of fruit: 150 completely wild type; 122 small, white, rough; 571 white, rough; 603 small; 36 rough; 29 smal, white; 4 white; 5 small, rough. a. What were the genotypes of the parental lines? b. Draw a linkage map for the...
Table 7.2 Phenotype # of each phenotype All mutant (parental) / Wild type (parental) Mutant veins and body color / / / / / / Mutant bristles Mutant veins and bristles Mutant body color Mutant body color and bristles Mutant veins / / / Practice 7.2. 7.2.3. Sketch a genetic map indicating the relative loci for each of these three alleles, and indicate the approximate map distance between each locus. 7.2.4. Calculate crossover interference (1-1-C) 7.2.4. Is it a negative...
By analyzing the gametes from a trihybrid fruit fly that is heterozygous for three linked genes (AaBbDd), you obtain the following data: Organize the 8 haploid genotypes into pairs that correspond to parentals, double crossovers (DCO) and each of the two types of single crossovers (SCO). Draw a map showing the order of the three genes on the chromosome. Label the map to indicate the distances (in centimorgans or map-units) between the gene in the middle and the genes on...
Drosophila
T a heterozyg chromosome 2), and hot tamale Cht). 301 307 46 36 ap ht + 41 ap + b ht h 리)5 4. Black body (b/b), curved wing(c/e), and purple eye color (pr/pr) are recessive traits known to be on chromosome 2 in Drosophila. A testcross of a heterozygous female for all 3 genes was crossed to a black bodied, curved wing. purple eyed male fly and yielded the following progeny Phenotype class Number Type Phenotype class Number...
2. The allele b gives Drosophila flies a black body, and bt gives brown, the wild-type phenotype. The allele wx of a separate gene gives waxy wings, and wx+ gives nonwaxy, the wild-type phenotype. The allele cn of a third gene gives cinnabar eyes, and cn* gives red, the wild-type phenotype. A female heterozygous for these three genes is testcrossed, and 1000 progeny are classified as follows: 5 wild type, 6 black waxy cinnabar, 69 waxy cinnabar, 67 black, 382...
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