In tomatoes, dwarf (d) is recessive to tall (D), opaque leaves (g) are recessive to green leaves (G) and fascinated fruit (f) is recessive to normal fruit (F). A tomato plant heterozygous for all three traits is used in a testcross, and the following brogeny are produced. Below are the specific alleles each offspring received from the heterozygous parent. D d D d D d d D Total: F 'f G f f F Cannon F F f g G D 6 210 63 12 246 63 39 51 690 d. Write the genotypes of the parents used in the testcross using the correct notation.

In tomatoes, dwarf (d) is recessive to tall (D), opaque leaves (g) are recessive to green leaves (G) and fascinated fruit (f) is recessive to normal fruit (F). A tomato plant heterozygous for all three traits is used in a testcross, and the following brogeny are produced. Below are the specific alleles each offspring received from the heterozygous parent. D d D d D d d D Total: F 'f G f f F Cannon F F f g G D 6 210 63 12 246 63 39 51 690 d. Write the genotypes of the parents used in the testcross using the correct notation.

Name: b. What is the probability that the mating of Fifi with the described
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Description: b. What is the probability that the mating of Fifi with the described male will produce a kitten affected with the disease?Please help In tomatoes, dwarf (d) is recessive to tall (D), opaque leaves (g) are recessive to green leaves (G) andfascinated

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter15: Genomes And Genomics

Section: Chapter Questions

Problem 2QP: Hemophilia and color blindness are both recessive conditions caused by genes on the X chromosome. To...

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Hemophilia and color blindness are both recessive conditions caused by genes on the X chromosome. To calculate the recombination frequency between the two genes, you draw a large number of pedigrees that include grandfathers with both hemophilia and color blindness, their daughters (who presumably have one chromosome with two normal alleles and one chromosome with two mutant alleles), and the daughters sons. Analyzing all the pedigrees together shows that 25 grandsons have both color blindness and hemophilia, 24 have neither of the traits, 1 has color blindness only, and 1 has hemophilia only. How many centimorgans (map units) separate the hemophilia locus from the locus for color blindness?
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?
Imagine that you are performing a cross involving seed texture in garden pea plants. You cross true-breeding round and wrinkled parents to obtain F1 offspring. Which of the following experimental results in terms of numbers of plants are closest to what you expect in the F2 progeny? a. 8lOroundseeds b. 8lOwrinkledseeds c. 405:395 round seeds:wrinkled seeds d. 610:190 round seeds:wrinkled seeds
In tomatoes, dwarf (d) is recessive to tall (D), opaque leaves (g) are recessive to green leaves (G) and fascinated fruit (f) is recessive to normal fruit (F). A tomato plant heterozygous for all three traits is used in a testcross, and the following progeny are produced. Below are the specific alleles each offspring received from the heterozygous parent. DUDUD d d d d D Total: F f f f F F F f G G G 00 00 00 00 g g G 6 210 63 12 246 63 39 51 690 a. Determine the order of these genes on the chromosome. b. Calculate the map distances between the genes and draw the map. c. Determine the amount of interference among these genes. d. Write the genotypes of the parents used in the testcross using the correct notation.
In corn, a triple heterozygote was obtained carrying themutant alleles s (shrunken), w (white aleurone), andy (waxy endosperm), all paired with their normal wildtype alleles. This triple heterozygote was testcrossed, andthe progeny contained 116 shrunken, white; 4 fully wildtype; 2538 shrunken; 601 shrunken, waxy; 626 white;2708 white, waxy; 2 shrunken, white, waxy; and 113 waxy.a. Determine if any of these three loci are linked and,if so, show map distances.b. Show the allele arrangement on the chromosomesof the triple heterozygote used in the testcross.c. Calculate interference, if appropriate.
In onions, male sterility is due to the interaction of a chromosomal allele pair hh and “sterile” (S) cytoplasm. All other combinations (i.e. HH/Hh and “sterile” cytoplasm, HH/Hh or hh “fertile” (F) cytoplasm) result in male-fertile plants. The male-sterile trait is incorporated into inbred lines to produce hybrid F1 seed on a commercial scale. Does it matter whether the cytoplasm is fertile or sterile in the male-fertile inbred? Explain.
Waxy endosperm (wx), shrunken endosperm (sh) and yellow seedling (v) are encoded by three recessive genes in corn that are linked on chromosome 5. A corn plant homozygous for all three recessive alleles is crossed with a plant homozygous for all the dominant alleles. The resulting F1 are then crossed with a plant homozygous for the recessive alleles in a three point test cross. The progeny of the test cross are: wx sh WX SH V WX SH V Wx sh WX sh V SH v SH V V 87 1,515 94 WX 1,531 3,479 292 WX Wx sh v 3,478 280 a. Determine the order of the genes on the chromosome. b. Calculate the map distances between the genes. c. Determine the cc and I.
In onions, male sterility is due to the interaction of a chromosomal allele pair hh and “sterile” (S) cytoplasm. All other combinations (i.e. HH/Hh and “sterile” cytoplasm, HH/Hh or hh “fertile” (F) cytoplasm) result in male-fertile plants. The male-sterile trait is incorporated into inbred lines to produce hybrid F1 seed on a commercial scale. Briefly outline the method of producing hybrid seed (heterozygote) for the commercial crop.Show the cross.
In onions, male sterility is due to the interaction of a chromosomal allele pair hh and “sterile” (S) cytoplasm. All other combinations (i.e. HH/Hh and “sterile” cytoplasm, HH/Hh or hh “fertile” (F) cytoplasm) result in male-fertile plants. The male-sterile trait is incorporated into inbred lines to produce hybrid F1 seed on a commercial scale. How would you perpetuate the male-sterile line? Show the cross. Briefly outline the method of producing hybrid seed (heterozygote) for the commercial crop. Show the cross. Does it matter whether the cytoplasm is fertile or sterile in the male-fertile inbred? Explain.
Waxy endosperm (wx), shrunken endosperm (sh), and yellow seedlings (v) are encoded by three recessive genes in corn that are linked on chromosome 5. A corn plant homozygous for all three recessive alleles is crossed with a plant homozygous for all the dominant alleles. The resulting F1 are then crossed with a plant homozygous for the recessive alleles in a three-point testcross. The progeny of the testcross are wx sh V 87 Wx Sh v 94 Wx Sh V 3,479 wx sh v 3,478 Wx sh V 1,515 wx Sh v 1,531 wx Sh V 292 Wx sh v 280 Total 10,756 a. Determine the order of these genes on the chromosome. b. Calculate the map distances between the genes. c. Determine the coefficient of coincidence and the interference among these genes.
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) a) If the parent plant is a triple heterozygote, what is its phenotype? b) 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 construct a genetic map using the three-point cross.
A sugarcane plant with yellow pollen and wavy leaves is crossed with a plant with yellow pollen andsmooth leaves. Seed are collected and germinated. The following results are obtained in the progeny:153 yellow pollen, wavy leaves145 yellow pollen, smooth leaves48 white pollen, wavy leaves 51 white pollen, smooth leavesa. For each locus (trait), assign appropriate symbols for the alleles of the genes, indicate thedominance interaction between the two alleles, and give all possible genotypes and theirassociated phenotypes.b. Give the genotypes of the parents of this cross.c. Give the expected genotypic and phenotypic ratios of the progeny of this cross. Please use aPunnett square to visualize your cross. Thank you very much for your assistance as it is greatly appreciated, a like is guaranteed if all subquestions are answered.