A cross in plants is done between the parents CCDD and ccdd to create a dihybrid F1 plant. This F1 plant was subsequently test crossed to a ccdd plant and you find the the progeny as follows:40% CD40% cd10% Cd10% cD If you did a similar experiment in which the parents were changed to ccDD and CCdd, what percentage of the test cross progeny would have the cd phenotype? 40% 80% 10% 20%

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Description: A cross in plants is done between the parents CCDD and ccdd to create a dihybrid F1 plant. This F1 plant was subsequently test crossed to a ccdd plant and you find the the progeny as follows:40% CD40% cd10% Cd10% cD If you did a similar experiment i

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A cross in plants is done between the parents CCDD and ccdd to create a dihybrid F1 plant. This F1 plant was subsequently test crossed to a ccdd plant and you find the the progeny as follows: 40% CD 40% cd 10% Cd 10% cD

A cross in plants is done between the parents CCDD and ccdd to create a dihybrid F1 plant. This F1 plant was subsequently test crossed to a ccdd plant and you find the the progeny as follows: 40% CD 40% cd 10% Cd 10% cD

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter5: The Inheritance Of Complex Traits

Section: Chapter Questions

Problem 7QP: Sunflowers with flowers 10 cm in diameter are crossed with a plant that has 20-cm flowers. The F1...

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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?
A cross was made between a plant that has blue flowers and purple seeds and a plant with white flowers and green seeds. The F1 generation was then allowed to self-fertilize. The following data were obtained. F1 Generation: All offspring have blue flowers with purple seeds. F2 Generation: 208 blue flowers, purple seeds 13 blue flowers, green seeds 19 White flowers, purple seeds 60 white flowers, green seeds Total: 300 The scientist needs to test if the two genes segregate independently and has formulated the null-hypothesis that there is no significant difference between the observed and expected data. What are the degrees of freedom for this experiment?
You have three different pure-breeding strains of the same flowering plant species. Strain f has purple flowers, while strains g and h have white flowers. The F2 is a result of allowing the F1 the self fertilize. Parental Cross F1 phenotypes F2 phenotype ratios f (purple) x f (purple) 100% purple 100% purple g (white) x g (white) 100% white 100% white h (white) x h (white) 100% white 100% white f (purple) x g (white) 100% purple 3 p : 1 w f (purple) x h (white) 100% purple 3 p : 1 w g (white) x h (white) 100% purple 9 p : 7 w Complementation occurred in which cross? The F2 data are best explained by which model?
Bateson and Punnett crossed two white-flowered lines and saw all purple flowers in the F1 generation. They concluded this was an example of complementary gene interactions because a cross of the F1 plants yielded what ratio in the F2 generation? A) 8 purple to 8 white B) 16 purple to 0 white C) 0 purple to 16 white D) 7 purple to 9 white E) 9 purple to 7 white
Hibiscus plants have different varieties of flowers. In an instance, both the red and white flowers showed that they are incompletely dominant with each other. If the flowers that were produced in the Hibiscus experiment was cross bred with each other, what is the ratio of their genotype? Explain. A) 1:3 B) 1:1:1:1 C) 1:2:1 D) 2:2
A cross was made between a Red and Long flowered (RRLL) plant and a blue and dwarf flowered (rrll) plant. The resulting F1 plants were testcrossed to blue and dwarf plants. 140 red and long 28 red and dwarf 32 blue and long 145 blue and dwarf After showing your Punnett square for the testcross, use the Chi Square test to determine if the genes are assorting independently. If they are linked, calculate the distance between the two genes. Show your work.
The following table provides results (petal colour) of 4 different F1 X F1 crosses. The genes involved in the 4 crosses are unrelated. Complete the table by indicating the phenotype of the testers and what would be the phenotypic ratios if the each F1 (indicated in the F1 phenotype column) were testcrossed.
In tomatoes, regular leaves (L) are multilobed and serrated and potato leaves (l) are broad, smooth, and single (Image 1). Red fruit (F) is dominant to yellow fruit (f). A cross is carried out between two pure lines of tomato plants, one having regular leaves and red fruit and the other having potato leaves and yellow fruit. The F1 generation all have regular leaves and red fruit. The F1 individuals are then crossed with one another. The information below represents two sets of data collected from the above cross. Phenotypes Data Set 1 Data Set 2 Regular Red 26 846 Regular Yellow 15 273 Potato Red 6 287 Potato Yellow 12 94 Total 59 1 500 Data set 1 is a from a small sample size and data set 2 is from a large sample size. Compare each data set to the expected probabilities. Explain any differences that you see in how different the observed results are from the expected results between the two data sets. Compare the expected probabilities of each phenotypic class to…
A genetic cross was made between two true-breeding parental fly strains. One parent strain displays red eyes and curly wings, while the other parent strain displays white eyes and vestigial wings. The resulting F1 generation flies were allowed to self-cross to produce F2 generation. The following data were obtained: F1 generation: all have red eyes and curly wings. F2 generation: 295 were red eyes and curly wings, 95 were red eyes and vestigial wings, 89 were white eyes and curly wings, 31 were white eyes and vestigial wings With this data above – please answer the following questions: Propose a hypothesis that explains the above inheritance pattern, test the goodness of fit between the data and your hypothesis using a chi square test. Use the chi square table from your textbook/online. Use the information obtained from the chi square table to explain what your calculated chi square results mean.
The shape of radishes may be long, round, or oval. The following results were obtained in the different possible crosses: A. Long x oval gave 1/2 long 1/2 oval B. Oval x round gave 1/2 oval and 1/2 round. C. Long x round gave all oval. D oval x oval gave 1/4 long, 1/2 oval, and 1/4 round. Explain these results. Hints: Show genotypes of each cross A. B. C. D.
How can you tell whether or not there are blue kernels? The Y was dominant. Set up and complete a Punnett square for a cross of two of the F1 from Step 1 (above). Answer these questions: What are the genotypes of the F2 generation? YY, Yy, yy What are their phenotypes? YY, Yy(yellow) , yy(blue) Are there more or fewer blue kernels than in the F1 generation? F2 generation has more blue kernels than F1. Identify the four possible gametes produced by the following individuals (Y = yellow, y = blue, S = smooth, s = wrinkled): YY Ss: YS Ys YS Ys Yy Ss: YS Ys yS ys Create a Punnett square using these gametes as P1 and determine the genotypes of the F1. YS Ys YS YYSS YYSs Ys YYSs YYss yS YySS YySs ys YySs Yyss What are the phenotypes? What is the ratio of those phenotypes? The phenotypes would be: (a) Yellow with smooth (b) Yellow with wrinkled 3:1…
Two true-breeding varieties of maize, one 11 cm high and the other 47 cm high were crossed and the resultant F1 hybrids were then crossed to generate the F2 . In the F2 there were a total of 13,923 plants with a continuous variation in heights between the two extremes and with only 3 plants as large as 47 cm high and 5 plants of 11 cm high.SO In a cross between a 29cm plant and a 20cm plant what would be the genotypes giving the smallest number of different phenotypes? specify the phenotypes observed.