In the self of a polygenic trihybrid R1/r1 ; R2/r2 ; R3/r3,use the product and sum rules to calculate the proportion of progeny with just one polygene “dose.”
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In the self of a polygenic trihybrid R1/r1 ; R2/r2 ; R3/r3,
use the product and sum rules to calculate the proportion of progeny with just one polygene “dose.”
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- Consider the following dihybrid testcross: B/b • E/e × b/b • e/e For the progeny from this testcross, determine the relative proportions (from 0% to 100%) of each genotype if the two genes: a) are linked (dominant alleles in cis conformation) with no crossing over: Be/be: be/be: BE/be: bE/be: b) assort independently. B/b; E/e: B/b; e/e: b/b; E/e: b/b; e/e: c) are linked (dominant alleles in cis conformation) and 20 map units apart. Be/be: be/be: BE/be: bE/be:What are the expected phenotypic ratios from the following cross:Tt Rr yy Aa × Tt rr YY Aa, where T = tall, t = dwarf, R = round,r = wrinkled, Y = yellow, y = green, A = axial, a = terminal; T, R,Y, and A are dominant alleles. Note: Consider using the multiplication method in answering this problemThe trihybrid e+f+g+/efg is test crossed to the triple recessive efg/efg and the following genotypes were obtained in the progeny: efg = 2; efg = 28; e'fg* = 9; e*rg 32; efg 73; e*fg* = 10; ef g* =10; e'fg 2; %3D "The odd gene is The gene order is The gene distance between e-f is The gene distance between f-g is The gene distance between e-g is
- Radishes may be round, oval and lomg. Aside from this, they may be red, purple or white in color. Red x white produces progeny, all of which are purple. If purple oval will becrossed with purple oval, how many types of phenotypes will appear and If purple oval are crossed with white, long radishes, then what genotypic and phenotypicratios exist in the progeny? Indicate the phenotypes of the offspring.How does one set up a punnet square for the following problem? I know the answer is supposed to be 3*1/2*1/4*1/4 = 3/32 but I'm not sure how we get these numbers. Please help!Question: In the self of a polygenic trihybrid R1/r1; R2/r2; R3/r3, use the product and sum rules to calculate the proportion of progeny with just one polygene “dose.”Radishes may be round, oval and lomg. Aside from this, they may be red, purple or white in color. Red x white produces progeny, all of which are purple. If purple oval will becrossed with purple oval, how many types of phenotypes will appear and If purple oval are crossed with white, long radishes, then what genotypic and phenotypicratios exist in the progeny? Indicate the phenotypes of the offspring. (show the solutions)
- The pedigree below shows the phenotypes of the ABO blood groups and Rhesus factors [positive (+) and negative (-)] for several members of a family. I (B+ AB- 1 2 3 4 II O- A+ В- B- AB+ A+ 1 2 4 5 6 a. What are the ABO blood group genotypes of individuals I-1 and I-2? b. Which child/ren of individual I-4 can donate blood to him? c. Which individual in the pedigree can donate blood to all the other individuals in the pedigree?Radishes may be round, oval and lomg. Aside from this, they may be red, purple or white in color. Red x white produces progeny, all of which are purple. If purple oval will be crossed with purple oval, how many types of phenotypes will appear? If purple oval are crossed with white, long radishes, then what genotypic and phenotypic ratios exist in the progeny? Indicate the phenotypes of the offspring.Deduce the phenotypic proportions in the progeny of thefollowing crosses of autotetraploids in which the a+/a locus is very close to the centromere. (Assume that the fourhomologous chromosomes of any one type pair randomly two by two and that only one copy of the a+ allele isnecessary for the wild-type phenotype.)a. a+/a+/a/a × a/a/a /ab. a+/a/a /a × a/a/a/ac. a+/a/a /a × a+/a/a /ad. a+/a+/a /a × a+/a/a /a
- A strain of Neurospora with the genotype H ⋅ I is crossedwith a strain with the genotype h ⋅ i. Half the progeny areH ⋅ I, and the other half are h ⋅ i. Explain how this outcome is possible.A purple flowering, smooth seed dihybrid plant (genotype PpSs) is test crossed with a white flowering, wrinkled seed plant (genotype ppss). These produce progeny in the following numbers of four phenotypes: 24:76:74:26 (purple flower + smooth seed coat: purple flower + wrinkled seed coat: white flower + smooth seed coat: white flower + wrinkled seed coat). a) What is the genotype of the original dihybrid plant? Specify which alleles are on each chromosome of the purple flowering, smooth seed plant (i.e. AB/ab or Ab/aB). b) How many map units separate the colour and seed coat genes? Show your calculations.In a cross of EeFfGgHh and EEFfGGhh individuals, what is the probability that an EEffGGhh individual can be produced?