Stem height in Wisconsin Fast Plants is a polygenic trait controlled by 6 genes. In a cross between two heterozygous plants, what fraction of the plants would you expect to fall in the shortest phenotypic class? 1/4096 1/64 1/256 1/2048 1/16384
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- We cross two short, non-purple F2 plants. What ratio of the progency will be short and non-purple in the F3 generation? 9/16 16/16 1/16 3/-6A certain plant has 3 un-linked gene pairs, which can be represented as AaBbCc. Upon self-fertilization what proportion of the progeny will display the dominant phenotype with respect to genes A and B and the recessive phenotype for "c"? 3/64 1/64 16/64 32/64 9164In a genetic cross between a homozygous tall plant with homozygous purple flowers and a homozygous short plant with heterozygous purple flowers, how many short plants will you expect in the F2 generation if you sample 36 individuals? Both tall and purple are dominant.
- 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.”Punnett Squares Practice Monohybrid Crosses DIRECTIONS: All these genetic probiems deal with pea plants and heir traits. Use the following kay for ail problems. Put the gametes for the 1st parent of each cross along the top, and the gametes for the 2nd parent along the left side. T= Tall ( = Short S= Smooth Seed = Wrinkled Seed G= Green Pod Y= Yellow Seed P= Purple Flower g= Yellow Pod 2. TT x TE y- Green Seed A= White Flower 1. PP x PA 3. Sa x Sa 4. yy x yy 5. Gg x Gg PP PA AP YY Yy 99 GG Gg gg SS Sa sa 8. heterozygous yellow seed x green seed TT TE 6. hybrid tall x short Te x t 7. purebrid tall x short TT x 9. hybrid green pod x hybrid green pod 10. hybrid tall x purebred tall YY Yy 99 13. heterozygous purple flowers x TT T TT TE GG Gg gg TT Te 11. purebred purple flowers x white flowers 12. hybrid purple flowers x white flowers 14. hybrid smooth seeds x hybrid smooth seeds 15. short plant x short plant white flowers PP PA AP PP PA AA phenotype ratios: PP PA AE Ss Se TT TE Purple…In a certain plant, the seed traits are as follows: Color: white (W) is dominant over yellow (w)Shape: disk (D) is dominant over sphere (d)Seed coat: thick (T) is dominant over thin (t) -If the parent plant is a triple heterozygote, what is its phenotype? Analyzing the phenotypes of the offspring, the alleles of the gametes were determined as: 85 wDt 390 WDT 27 WDt 81 WdT5 wDT 374 wdt 30 wdT 8 Wdt-Try to construct a genetic map using the three-point cross
- A heterozygous tall pea plant is allowed to self-fertilize. The resulting F1 progeny are 25% homozygous tall, 50% heterozygous tall, and 25% dwarf. If all of the F1 plants are allowed to self-fertilize, what percentage of their combined F2 progeny are heterozygous tall? Multiple Choice 37.5% 75% 25% 50%# of Green Leaves _________111______________ # of White Leaves ___________35______________ If a heterozygous F1 Tobacco plant was crossed to an albino plant, what is the expected number of green and white plants in the next generation? (show Punnett square and give the expected ratio)QUEJTIUIv 4 In tomato plants, tall vine (D) is dominant over dwarf vine (d) and round fruit (0) is dominant over oval-shaped fruit (o). Two tall, round-fruit shape plants (plants 1 and 2) are crossed with dwarf, oval-shape fruit plants. The results are as follows: PLANT 1 PLANT 2 Tall, round x dwarf, oval-shape Phenotypic classes Tall, round Dwarf, oval Tall, oval Dwarf, round Tall, round x dwarf, oval-shape Phenotypic classes Numbers Numbers 81 Tall, round 21 Dwarf, oval Tall, oval Dwarf, round 79 19 22 77 18 83 Total 200 Total 200 a. Why is there a difference in the proportionate number of plants in each phenotypic class of the offspring resulting from test crosses of plants 1 and 2? b. Calculate the recombination frequency between the genes D/d and O/o in tomatoes. c. Draw a chromosome map for these genes. (Use underscore (_) to draw the line for the map)
- Fine spines (s), smooth fruit (tu), and uniform fruit color (u) are three recessive traits in cucumbers. A cucumber plant heterozygous for all three traits is used in a test cross, and the following progeny are produced from this test cross. Type Number SU TU su Tu Su Tu su tu SU tu s U tu s U Tu Su tu TOTAL 2 70 21 4 82 21 13 17 230 Identify the order of the genes on the chromosome:A snapdragon with pink petals, black anthers, and longstems was allowed to self-fertilize. From the resultingseeds, 650 adult plants were obtained. The phenotypesof these offspring are listed here.78 red long tan26 red short tan44 red long black15 red short black39 pink long tan13 pink short tan204 pink long black68 pink short black5 white long tan2 white short tan117 white long black39 white short blacka. Using P for one allele and p for the other, indicatehow flower color is inherited.b. What numbers of red : pink : white would havebeen expected among these 650 plants?c. How are anther color and stem length inherited?d. What was the genotype of the original plant?e. Do any of the three genes show independentassortment?f. For any genes that are linked, indicate the arrangements of the alleles on the homologous chromosomes in the original snapdragon, and estimate thedistance between the genesTwo pure-breeding lines of petunia plants are crossed. Line 1 plants grow to a height of 54 cm, and Line 2 plants grow to a height of 18 cm. Petunia plant height is controlled by three genes, A, B and C. Line 1 has the genotype A₁A₁B₁B₁C₁C₁, and line 2 has the genotype A2A2B₂B₂C₂C₂. Assume that genotype alone determines plant height under ideal growth conditions and that the alleles of the three genes are additive. If the F1 plants are self crossed, what is the expected proportion of F2 plants with the genotype A₁A₁B₁B₁C₁C₁ 1/8 1/32 1/16 1/4 1/64