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- What is the phenotypic ratio for this dihybrid cross? ++ +b z+ zb ++ ++ z+ ++ +b ++ b+ ++ ++ +b bb +b bb +z +z ZZ ZZ ++ b+ ++ b+ +z +z ZZ ZZ b +b bb +b bb2 3 4 5 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 ху Which chromosome set has an extra What diagnosis would you give this patient?. Finish the notation for this patient's karyotype: What causes a dark band on the chromosome? What is a centromere?Give a brief analysis on the following chi-square for cross 1(wild type female × white eyes vestigial wings male) ( write a paragraph or more)
- Explain the equation E+S---->ES----> E + P.Neurospora of genotype a + c are crossed withNeurospora of genotype + b +. (Here, + is shorthandfor the wild-type allele.) The following tetrads areobtained (note that the genotype of the four sporepairs in an ascus are listed, rather than listing alleight spores):a + c a b c + + c + b c a b + a + ca + c a b c a + c a b c a b + a b c+ b + + + + + b + + + + + + c + + ++ b + + + + a b + a + + + + c + b +137 141 26 25 2 3a. In how many cells has meiosis occurred to yieldthese data?b. Give the best genetic map to explain these results.Indicate all relevant genetic distances, both betweengenes and between each gene and the centromere.c. Diagram a meiosis that could give rise to oneof the three tetrads in the class at the far right inthe listIn this test cross of AaBbCc you got these results: 100 АВС 100 abc 100 ABC 100 abC 25Abc 25ABC 25 аBС 25 аВс a) Which two genes are linked? Show or explain how you know. b) How far apart are those genes?
- ) You are performing a dihybrid cross with a strain of flies that is ebony (e) and a strain that is pink (p). The results of the F2 are shown below. Use x? test to help you determine if e and p are linked (Note: refer to Table I for chi-square table). Number 1827 Phenotype + p 424 e + 386 e p 298 Genetic map is the relative positions of genetic markers on a chromosome. Explain the rationale behind genetic mapping.Consider the following Test Cross results & chromosome map: Test Cross Progeny 525 A B C 500 A+ B+C+ 456 A+ B C 308 A B+C+ 101 A B C+ 100 A+ B+C 2 A+ B C+ 1 A B+C Total Progeny = 1993 1-Calculate the interference.?Label the diagram: 3 5' Primer 5' 5' ¹3'
- If a Punnett square is used to visualize a three-factor cross (trihybrid cross, e.g. YyTtRr x YyTtRr) how many boxes would be inside of the square? O 3 8 O 48 O 64 128 O 256Consider the following Test Cross results & chromosome map: Test Cross Progeny 525 A B C 500 A+ B+C+ 456 A+ B C 308 A B+C+ 101 A B C+ 100 A+ B+C 2 A+ B C+ 1 A B+C Total Progeny = 1993 1-Calculate the coefficient of coincidence.Suppose that you have obtained the following data from your complementation crosses with the M.5.2/CyO mutant stock. Chromosomal Complement? Yes/No Genotype of deficiency stock Df(2R)1/CyO Df(2R)2/CyO Df(2R)3/CyO Df(2R)4/CyO Deficiency stock Chromosomal breakpoint 2 120,400 193,070 161,250 143,175 number breakpoint 1 1 Yes 100,000 Yes 158,630 No 128,100 4 No 116,300 1. What phenotypic ratio is seen in the crosses that complement? Explain this ratio.