7. In fowl, genotype rrpp gives single comb, R_P_ walnut comb, rrP_ pea comb, and R_pp rose comb. a. If single-combed birds are crossed with birds of a true-breeding walnut-combed strain, predict the proportions of comb types that will appear in the F, and F₂. b. What is the probable genotypes of parent fowls in a walnut X rose mating that would produce progenies in this proportion: 3 rose: 3walnut: 1pea: 1 single?

7. In fowl, genotype rrpp gives single comb, R_P_ walnut comb, rrP_ pea comb, and R_pp rose comb. a. If single-combed birds are crossed with birds of a true-breeding walnut-combed strain, predict the proportions of comb types that will appear in the F, and F₂. b. What is the probable genotypes of parent fowls in a walnut X rose mating that would produce progenies in this proportion: 3 rose: 3walnut: 1pea: 1 single?

Name: 7. In fowl, genotype rrpp gives single comb, R_P_ walnut comb, rrP_ p
Uploaded: 2024-03-20T06:43:04.000Z
Channel: Bartleby
Description: 7. In fowl, genotype rrpp gives single comb, R_P_ walnut comb, rrP_ pea comb,and R_pp rose comb.a. If single-combed birds are crossed with birds of a true-breedingwalnut-combed strain, predict the proportions of comb types that willappear in the F₁

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter12: Mendel, Genes, And Inheritance

Section: Chapter Questions

Problem 6TYK

See similar textbooks

Similar questions

4) The round pea seed allele (R) is dominant, while the wrinkled pea seed allele (r) isrecessive. A heterozygous round-seeded pea plant is crossed with a wrinkle-seeded peaplant. Use a Punnett Square to solve the following: a. Determine the predicted genotype ratio of the offspring. b. Determine the predicted phenotype ratio of the offspring. c. If this cross produced 50 plants, how many plants would you predict would bewrinkle-seeded pea plants? please if punnet square needed write down the P G and F1 also thanks
8. In guinea pigs, the allele for black fur (B) is dominant over the allele for white fur (b). Similarly, the allele for straight hair (H) is dominant over the allele for having rough hair (h). Pure breeding rough haired guinea pigs with black fur were crossed with pure breeding straight haired guinea pigs with white fur. a. State the genotype and the phenotype of the F1 individuals produced as a result of this cross.b. Two F1 offspring were mated together. Calculate the expected ratio of phenotypes in the F2 generation.c. Show the completed Punnett square below.
1. A male French Alpine (WwHH) is crossed with a female French Alpine (wwHh). Where W-White, w-gray, H-Horned, h-Polled. Give the phenotypic and genotypic ratio of their offspring. 2. A male Sahiwal (RRHH) is crossed with a female Angus (Rrhh). Where R-Red, r-Brown, H-Horned, h-polled. Give the phenotypic and genotypic ratio of their offspring.
2. In terms of pea plant height, tall plants (T) are dominant over dwarf plants (t). Purple flowers (P) are dominant over white flowers (p). Create a Punnett square that shows all of the possible offspring that could occur from breeding the following: a.) Plant 1: Heterozygous dominant for plant height, homozygous dominant for flower color b.) Plant 2: Heterozygous dominant for plant height, homozygous recessive for flower color c.) Include the percentage/ratio of occurrence for each phenotype.
1. A cow is heterozygous for three genes (WwPp) where W-White, w-Brown, P-Polled, p-Horned. Give the phenotypic and genotypic ratio of their offspring if the cow is inter se mated. 2.A male Sahiwal (RRHH) is crossed with a female Angus (Rrhh). Where R-Red, r-Brown, H-Horned, h-polled. Give the phenotypic and genotypic ratio of their offspring.
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.a) How many i) genes and ii) how many alleles are involved in determining height in this plant? b) What is the contribution of each dominant allele to the phenotype in cm? c) What would be the size and genotype of the F1 from a cross between a true-breeding 11 cm plant and a true-breeding 47 cm plant? d) The F1 from (b) is then crossed to give an F2. What proportion would you expect in the F2 of each extreme phenotype? e) 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.
1. A gardener harvested 3,697 seeds from cross breeding a pure line red-flower petunia and pure line white-flower petunia. Then, he planted the harvested seeds in a 25x25 m plot. He was shocked that all of his planted petunias produced red flowers. Why? A. The red flower petunia is a dominant trait. B. The red flower petunia is a recessive trait. C. The white flower petunia is a dominant trait. D. The white flower petunia has a heterozygous genotype in flower color. 2. A veterinary doctor found a long tail female cat along the way going to her clinic. She wanted to know if the long tail female cat is a pure breed/line or not? So as a Biology student with genetic subject, which of the following choices can you correctly suggest to her? Considering the long tail trait as dominant trait. A. She must cross breed it with a short tail female cat B. She must do a back cross breeding with a short tail male cat C. She must run a molecular test for the long tail female cat…
1. Incomplete dominance governs the pigment gene of a flower. A mating between heterozygotes yields the following phenotypic ratio: 10 yellow flowers, 35 pink flowers and white flowers. Which statement describes the situation? a. The flower pigment gene is defined by a pink and yellow allele. b. The heterozygotes were yellow. c. The heterozygotes were white. d. The flower pigment gene is defined by a red and a white allele. 2. Mendel's rules do not correctly predict patterns of inheritance for tightly linked genes or the inheritance of alleles that show incomplete dominance. Does this mean that his hypotheses are incorrect? A. Yes, because they are relevant to only a small number of organisms and traits. b. Yes, because not all data support his hypotheses. c. No, because he was not aware of meiosis or the chromosome theory of inheritance. d. No, it just means that his hypotheses are limited to certain conditions. 3. Discuss the inheritance of hemophilia
1. In a test cross, a homozygous recessive parent (mm) and a homozygous dominant parent (MM) are crossed. What is the genotypic probability of the offspring? * a. 100% Mm b. 100% mm c. 50% Mm and 50% mm d. 75% Mm and 25% mm e. 50% dominant and 50% recessive f. 100% dominant 2. After performing an experiment on monohybrid cross about the shape of the pea seeds, data were obtained from the result. There are 87 wrinkled pea seeds and 313 round seeds. Of course, round seed is dominant over wrinkled seed. What is the expected value or ratio for the wrinkled seed? * a. 21.75 b. 65.25 c. 100 d. 300 e. 400 f. None of the choices 3.After performing an experiment on monohybrid cross about the shape of the pea seeds, data were obtained from the result. There are 87 wrinkled pea seeds and 313 round seeds. Of course, round seed is dominant over wrinkled seed. What will be the computed chi-square value? * a. 9.75 b. 5.25 c. 4.75 d. 3.00 e. 2.26 f. 2.25 g. 1.69 h. 0.56 i. None of the choices 4.…
3. Codominance is when two dominant alleles of contrastingpair fully expressed at the same time in heterozygousindividual. Which of the following situation is an example ofcodominance?A. Jo mated the red bull with the white cow to produce a roan cow.B. Melissa traces her blood type by crossing the blood type of herparents.C. James passed a genetic disorder hypertrichosis pinnae aurisor hairy ear to his son.D. Tess crosses the red carnation flower plant with white flowercarnation plant to produce a pink flower plant.
3. You perform a cross between two true-breedingstrains of zucchini. One has green fruit and the otherhas yellow fruit. The F1 plants are all green, butwhen these are crossed, the F2 plants consist of9 green : 7 yellow.a. Explain this result. What were the genotypes of thetwo parental strains?b. Indicate the phenotypes, with frequencies, of theprogeny of a testcross of the F1 plants.c. Describe the epistasis interactions observed.d. Suppose that the dominant alleles specify functional enzymes, and the recessive alleles are nonfunctional. Propose a biochemical pathway thatcould explain the gene interactions.e. Is it possible to cross two different pure-breedingyellow zucchini strains and obtain all green progeny? What would be the genotypes of the parentsand progeny? f. Assuming that wild-type zucchini are green, howwould you describe the phenomenon that occurredin the F1 of part (e)?
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. a) What would be the size and genotype of the F1 from a cross between a true-breeding 11 cm plant and a true-breeding 47 cm plant? b) The F1 from (b) is then crossed to give an F2. What proportion would you expect in the F2 of each extreme phenotype? c) 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.