5. Flower position, stem length, and seed shape are three charactersthat Mendel studied. Each is controlled by an independentlyassorting gene and has dominant and recessive expression asnasindicated in Table 14.1. If a plant that is heterozygous for all threecharacters is allowed to self-fertilize, what proportion of theoffspring would you expect to be each of the following? (Note:Use the rules of probability instead of a huge Punnett square.)(a) homozygous for the three dominant traitsndiJoueacher h(b) homozygous for the three recessive traits(c) heterozygous for all three charactersts is(d) homozygous for axial and tall, heterozygous for seed shapevoul

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Description: 5. Flower position, stem length, and seed shape are three charactersthat Mendel studied. Each is controlled by an independentlyassorting gene and has dominant and recessive expression asnasindicated in Table 14.1. If a plant that is heterozygous for

Parents AATTRR x aattrr ( A- axial ,a - terminal , T - tall , t- dwarf…

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Flower position, stem length, and seed shape are that Mendel studied. Each is controlled by an independently assorting gene and has dominant and recessive expression as

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter12: Mendel's Experiments And Heredity

Section: Chapter Questions

Problem 1VCQ: Figure 12.5 In pea plants, round peas (R) are dominant to wrinkled peas (r). You do a test cross...

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In maize trisomics, n + 1 pollen is not viable. If adominant allele at the B locus produces purple colorinstead of the recessive phenotype bronze and a B b btrisomic plant is pollinated by a B B b plant, whatproportion of the progeny produced will be trisomicand have a bronze phenotype?
Three recessive traits in garden pea plants are as follows: yellowpods are recessive to green pods, bluish green seedlings are recessiveto green seedlings, creeper (a plant that cannot stand up) isrecessive to normal. A true-breeding normal plant with green podsand green seedlings was crossed to a creeper with yellow pods andbluish green seedlings. The F1 plants were then crossed to creeperswith yellow pods and bluish green seedlings. The following resultswere obtained: 2059 green pods, green seedlings, normal151 green pods, green seedlings, creeper281 green pods, bluish green seedlings, normal15 green pods, bluish green seedlings, creeper2041 yellow pods, bluish green seedlings, creeper157 yellow pods, bluish green seedlings, normal282 yellow pods, green seedlings, creeper11 yellow pods, green seedlings, normal Construct a genetic map that indicates the map distances betweenthese three genes?
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For all seven characters described in the data of Mendel allowed the F2 plants to self-fertilize. He found that whenF2 plants with recessive traits were crossed to each other, theyalways bred true. However, when F2 plants with dominant traitswere crossed, some bred true but others did not. A summary ofMendel’s results is shown to the right When considering the data in this table, keep in mind that theydescribe the characteristics of the F2 generation parents that haddisplayed a dominant phenotype. These data were deduced byanalyzing the outcome of the F3 generation. Based on Mendel’slaws, explain why the ratios were approximately 1:2
Incomplete dominanceIn Mendel's experiments, if the gene for tall (T) plants was incompletely dominant overthe gene for short (t) plants, what would be the result of crossing two Tt plants? Explain result.
In plants like those of Questions 13 and 14, with red, pink, and white flowers, does flower color show complete or incomplete dominance?
A 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.
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A cross between two pea plants, both of which grewfrom yellow round seeds, gave the following numbersof seeds: 156 yellow round and 54 yellow wrinkled.What are the genotypes of the parent plants? (Yellowand round are dominant traits.)
The self-fertilization of an F1 pea plant produced froma parent plant homozygous for yellow and wrinkledseeds and a parent homozygous for green and roundseeds resulted in a pod containing seven F2 peas. (Yellow and round are dominant.) What is the probability that all seven peas in the pod are yellow and round?
Chi-square Test In the pea plants use by Gregor Mendel in his study, the purple flower color is dominant over white,and the axial position on a branch is dominant over terminal. A plant believed to be heterozygouswas selfed and produced flowers with the following phenotypes: 23 white terminal68 white axial81 purple terminal187 purple axial a. assign alleles to the different traitspurple __________ axial ___________white ___________ terminal _______ b. refer to the image attached
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