A pea plant showing two dominant phenotypes, tall plant (D) and purple flower color (W) is test-crossed with a plant showing both recessive phenotypes for dwarf plant (dd) and white color flower (ww). The results of the F1 offspring showed tall purple flower plants; tall white flower plants; dwarf purple flower plants; and dwarf white flower plants in approximately a 1:1:1:1 ratio. Based on these observations, what should be the genotype of the tested plant? DdWw DdWW ddWw DDWw DDWW

A pea plant showing two dominant phenotypes, tall plant (D) and purple flower color (W) is test-crossed with a plant showing both recessive phenotypes for dwarf plant (dd) and white color flower (ww). The results of the F1 offspring showed tall purple flower plants; tall white flower plants; dwarf purple flower plants; and dwarf white flower plants in approximately a 1:1:1:1 ratio. Based on these observations, what should be the genotype of the tested plant? DdWw DdWW ddWw DDWw DDWW

Name: A pea plant showing two dominant phenotypes, tall plant (D) and purple
Uploaded: 2024-03-20T06:43:04.000Z
Channel: Bartleby
Description: A pea plant showing two dominant phenotypes, tall plant (D) and purple flower color (W) is test-crossed with a plant showing both recessive phenotypes for dwarf plant (dd) and white color flower (ww). The results of the F1 offspring showed tall purpl

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter8: Patterns Of Inheritance

Section: Chapter Questions

Problem 5RQ: Imagine that you are performing a cross involving seed texture in garden pea plants. You cross...

See similar textbooks

Similar questions

Figure 8.10 In pea plants, purple flowers (P) are dominant to white (p), and yellow peas (Y) are dominant to green (y). What are the possible genotypes and phenotypes for a cross between PpYY and ppYy pea plants? How many squares would you need to complete a Punnett square analysis of this cross?
Sunflowers with flowers 10 cm in diameter are crossed with a plant that has 20-cm flowers. The F1 plants have flowers 15 cm in diameter. In the F2 generation, 4 flowers are 10 cm in diameter and 4 are 20 cm in diameter. Between these are 5 phenotypic classes with diameters intermediate to those at the extremes. a. Assuming that the alleles that contribute to flower diameter act additively, how many genes control flower size in this strain of sunflowers? b. How much does each additive allele contribute to flower diameter? c. What size flower makes up the largest phenotypic class?
Two 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
The shape of carrot may either be long (SLSL), round (SRSR) or oval (SLSR). If long carrot is crossed with an oval carrot and the F1 is self-bred, what are the phenotypic and genotypic ratios expected in the F2 generation?
In the garden pea, orange pods (o) are recessive to green pods (+), and sensitivity to pea mosaic virus (v) is recessive to resistance to the virus (+). A plant with orange pods and sensitivity to the virus was crossed to a true-breeding plant with green pods and resistance to the virus. The F1 progeny were then test-crossed to plants with orange pods and sensitivity to the virus with the following results: 160 orange pods, virus sensitive 36 orange pods, virus resistant 165 green pods, virus resistant 39 green pods, virus sensitive A goodness of fit analysis for the operative genetic mechanism behind these obtained results will result to a X2 value of ____ which is (below, above) the alpha value, and interpreted as (significant, not significant). Hence the hypothesis that the data is due to (dihybrid self-cross, linkage, epistasis) is (accepted, not accepted). Express answer in decimal form. Significant # of decimal…
In the garden pea, orange pods (o) are recessive to green pods (+), and sensitivityto pea mosaic virus (v) is recessive to resistance to the virus (+). A plant withorange pods and sensitivity to the virus was crossed to a true-breeding plant withgreen pods and resistance to the virus. The F1 progeny were then test-crossed toplants with orange pods and sensitivity to the virus with the following results:160 orange pods, virus sensitive 36 orange pods, virus resistant165 green pods, virus resistant 39 green pods, virus sensitive 1. What are the gamete frequencies of the recombinants and non-recombinants? 2. What are the expected frequencies of the recombinant and non-recombinantgenotypes?
In sesame plants the one-pod condition is dominant (P) to the three-pod condition (p), and a normal leaf (L) is dominant to the wrinkled leaf (l). Pod type and leaf type are inherited independently. Determine the genotypes for the parent producing offspring: 318 one-pod, normal leaf and 98 one-pod, wrinkled leaf PPLl x PPLl, PPLl x PpLl, or PPLl x ppLl ppll x ppLl PPLL x PPLL ppll x ppll
In watermelons, the green colour gene (G) is dominant over the striped colour gene (g), and round shape (R) is dominant over long shape (r). A heterozygous round green colour (GgRr) watermelon plant is crossed with another heterozygous round green colour (GgRr) plant. Determine the expected phenotypic ratio of the F1 generation.
Radishes may be long, round, or oval, and they may bered, white, or purple. You cross a long, white variety witha round, red one and obtain an oval, purple F1. TheF2 shows nine phenotypic classes as follows: 9 long, red;15 long, purple; 19 oval, red; 32 oval, purple; 8 long,white; 16 round, purple; 8 round, white; 16 oval, white;and 9 round, red.a. Provide a genetic explanation of these results. Besure to define the genotypes and show the constitutionof the parents, the F1, and the F2.b. Predict the genotypic and phenotypic proportionsin the progeny of a cross between a long, purple radishand an oval, purple one.
If a homozygous tall pea plant is crossed with a homozygous shortpea plant, what are the possible genotype and phenotype of theoffspring? Legend: T- tall pea plant t- short pea plant Genotypes of the parents: TT x tt Question to answer ff: 1. What is the genotypic ratio? 2. What are the possible phenotypes of the offspring? 3. What is the phenotypic ratio?
A is dominant over a and B is dominant over b. Genes A/a and B/b assort independently. The parental cross (P) is between true- breeding (homozygous) strains (AA bb x aa BB). The resulting F1 offspring would be [Select ] A F1 x F1 cross gives the F2 generation. The ratio of phenotypes in the F2 generation can be described as [ Select ] In the phenotypic ratio, what number refers to individuals that are: dominant for both traits? [ Select ] recessive for both traits? [Select ] To what phenotypes do the "3"s in the ratio refer? [ Select ] > >
Assume that smooth seed coats are dominant over rough seed coat. If two pea plants that are both Heterozygous for seed coats are crossed, what do you expect in the offspring (the f1 generation)? Specifically, what genotypes, what phenotypes, and in what ratios? (Use S for the smooth seed coat and s for the rough seed coat.) (Again, it is helpful to write out all the possible genotypes and give the phenotype for each genotype before answering the specific question.) Be careful in writing capital S and lower case.