Concept explainers
Videos
Researchers cross a corn plant that is pure
the recessive traits colorless aleurone (
Counting the kernels from about
a. Why are these data consistent with genetic linkageamong the three genes?
b. Perform a
c. What is the order of these genes in corn?
d. Calculate the recombination fraction between the genepairs.
e. What is the interference value for this data set?
Learn your wayIncludes step-by-step video
Chapter 5 Solutions
GENETIC ANALYSIS: INTEGRATED - ACCESS
Additional Science Textbook Solutions
Campbell Biology: Concepts & Connections (8th Edition)
Microbiology: An Introduction (13th Edition)
Biology: Life on Earth (11th Edition)
Biology: Life on Earth with Physiology (11th Edition)
Campbell Essential Biology (7th Edition)
- F1 hybrids between two species of cotton, Gossypium barbadenseand Gossypium hirsutum, are very vigorous plants. However, F1crosses produce many seeds that do not germinate and a high percentageof very weak F2 offspring. Suggest two reasons for theseobservations.arrow_forwardA researcher crosses two white-flowered lines ofAntirrhinum plants as follows and obtains the followingresults:pure line 1 × pure line 2↓F1 all whiteF1 × F1↓F2 131 white29 reda. Deduce the inheritance of these phenotypes; useclearly defined gene symbols. Give the genotypes ofthe parents, F1, and F2.b. Predict the outcome of crosses of the F1 with eachparental line.arrow_forwardHybridization of a homozygous dominant and homozygous recessive plant was conducted. What is the probability that the F2 progeny will have the both pink flowers and fruits?arrow_forward
- Hybridization of a homozygous dominant and homozygous recessive plant was conducted. What is the probability that the F2 progeny will have the phenotype green big leaves, with pink flowers having both small and big petals?arrow_forward10) Two pure-breeding phlox plants were crossed, one with dark-blue flowers and the other with pinl The Fi generation all had dark-blue flowers. When the F₁ were crossed with each other, the F₂ generati consisted of 176 plants: 101 with dark-blue flowers, 33 with light-blue flowers, 30 with red flowers, ar pink flowers. 10) What progeny types would result from crossing pure-breeding plants with light-blue flowen breeding plants with red flowers? A) all would be dark blue B) 1 light blue: 1 red C) 9 dark blue: 3 light blue: 3 red: 1 pink D) all would be redarrow_forward1) S-Tu-U 2) S-U-Tu 3) Tu-S-U 4) U-S-Tuarrow_forward
- 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.arrow_forwardWaxy 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.arrow_forwardA pure-breeding strain of squash that produced diskshaped fruits (see the accompanying illustration) wascrossed with a pure-breeding strain having long fruits.The F1 had disk fruits, but the F2 showed a new phenotype, sphere, and was composed of the followingproportions:Longlong 32 sphere 178 disk 270Sphere DiskPropose an explanation for these results, and showthe genotypes of the P, F1, and F2 generations.arrow_forward
- 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 genesarrow_forward. Assume that white color (W) is dominant over yellow color (w) in corn. Perform a Punnett square for a cross where pollen from the anthers of a plant that is heterozygous for color is placed on the pistil of a yellow-fruited plant. What are the genotypes and phenotypes you would expect to find from this cross?arrow_forwardTall plant (D) is dominant to dwaf (d), and purple flower color (W) is dominant to white flower color (w). In order to determine the genotype of a tall plant with purple flowers, you decide to conduct a test cross. What should be the genotype of the plant you use to carry out the test cross?arrow_forward
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College