You are studying three linked genes in snapdragons. The flower color locus is in the center. There are 12.7 cM between the flower color locus and the plant height locus. There are 8.8 cM between the flower color locus and the leaf type locus. The coefficient of coincidence is 0.8. Pure-breeding tall, red-flowered plants with fuzzy leaves were crossed to pure-breeding dwarf, blue-flowered plants with smooth leaves. The F1 were testcrossed. Calculate the proportion of the testcross progeny that are expected to have blue flowers and smooth leaves. Round properly to 4 decimal digits. Answer:

You are studying three linked genes in snapdragons. The flower color locus is in the center. There are 12.7 cM between the flower color locus and the plant height locus. There are 8.8 cM between the flower color locus and the leaf type locus. The coefficient of coincidence is 0.8. Pure-breeding tall, red-flowered plants with fuzzy leaves were crossed to pure-breeding dwarf, blue-flowered plants with smooth leaves. The F1 were testcrossed. Calculate the proportion of the testcross progeny that are expected to have blue flowers and smooth leaves. Round properly to 4 decimal digits. Answer:

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Two groups of geneticists, in California and in Chile, begin work to develop a linkage map of the medfly. They both independently find that the loci for body color (B = black, b = gray) and eye shape (R = round, r = star) are linked 28 m.u. apart. They send strains to each other and perform crosses; a summary of all their findings is shown here:a. Provide a genetic hypothesis that explains the three sets of testcross results. b. Draw the key chromosomal features of meiosis in the F1 from a cross of the Californian and Chilean lines.
In a mapping cross, you determine that the recombination frequency between: loci Q and P is 9% loci Q and Lis 13%. If locus Q is in between loci P and L, then the recombination frequency between P and L should be approximately: 65%. 4%. 22% 11%. 13%
A three point testcross is carried out between three linked genes. The resulting nonrecombinant progeny are d+b+k+ and dbk and the double-crossover progeny are dbk+ and d+b+k. Which is the middle locus? Show all your work. Show all possible progeny.
In corn, the following genes are linked on chromosome 3: va - variable sterile v - virescent gl - glossy leaves Two homozygous plants were crossed and produced an all-normal F1. The F1 was test-crossed, progeny phenotypes appeared as follows: 235 virescent 40 variable sterile 48 virescent, glossy7 glossy 270 variable sterile, glossy 4 variable sterile, virescent60 wild 62 variable sterile, virescent, glossy Show the diagram of the chromosome map for the 3 loci in this format: a--7.00 cM--b--8.00 cM--c--9.00 cM What is the correct sequence of the three gene loci? What is the coefficient of coincidence (COC) and the interference in this cross?
In a three point cross problem for genes Q, L, and T, you have identified the parentals and double recombinants. Using that data (shown below), what is the order of the genes? Type: Alleles parental q L t parental Q l T double cross over q L T double cross over Q l t Group of answer choices L Q T L T Q T L Q the correct answer is not available
Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants with red and round fruit (FFRR) were crossed to pure breeding plants with yellow and oval fruit (ffrr). The red and round F1 progeny were then testcrossed to plants that were homozygous recessive for both genes (ffrr) with the following results: Phenotypes Number of Offspring Red and round 2 255 Red and oval 290 Yellow and round 310 Yellow and oval 2 145 Compare the expected probabilities of each phenotype to the observed probabilities. Are the gene for fruit colour and the gene for fruit shape assorting independently? Explain.
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) You are performing a dihybrid cross with a strain of flies that is ebony (e) and a strain that is pink (p). The results of the F2 are shown below. Use x? test to help you determine if e and p are linked (Note: refer to Table I for chi-square table). Number 1827 Phenotype + p 424 e + 386 e p 298 Genetic map is the relative positions of genetic markers on a chromosome. Explain the rationale behind genetic mapping.
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