5. Assume that D, E, F, G, H, and I are autosomal genes on different chromosomes. From the mating (parent A) DdeeFfGGHhli x (parent B) DdEEFFGgHhii, how many different kinds of gametes can be produced by each parent? 6. An experimenter cross - and 102 short plants. What genotype would you expect of the parents? Why? pollinates 2 tall plants, and in the next generation counts 290 tall plants

5. Assume that D, E, F, G, H, and I are autosomal genes on different chromosomes. From the mating (parent A) DdeeFfGGHhli x (parent B) DdEEFFGgHhii, how many different kinds of gametes can be produced by each parent? 6. An experimenter cross - and 102 short plants. What genotype would you expect of the parents? Why? pollinates 2 tall plants, and in the next generation counts 290 tall plants

Name: 5. Assume that D, E, F, G, H, and I are autosomal genes on different
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Description: 5. Assume that D, E, F, G, H, and I are autosomal genes on different chromosomes. From themating (parent A) DdeeFfGGHhli x (parent B) DdEEFFGgHhii, how many different kinds ofgametes can be produced by each parent?6. An experimenter cross - pollinat

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 1TYK: The dominant C allele of a gene that controls color in corn produces kernels with color; plants...

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18. In tomatoes, tall (D) is dominant over dwarf (d), and smooth fruit (P) is dominant over pubescent (p) fruit, which is covered with fine hairs. A farmer has two tall and smooth tomato plants, which we will call plant A and plant B. The farmer crosses plants A and B with the same dwarf and pubescent plant and obtains the following numbers of progeny: Dd Pp Dd pp dd Pp dd pp Progeny of Plant A 122 6 4 124 a. What are the genotypes of plant A and plant B? Indicate what are the alleles on each chromosome Plant B 2 82 82 4 b. Are the loci that determine height of the plant and pubescence linked? If so, what is the percent recombination between them? Use chi-square test: 1) what is your hypothesis; 2) what are the expected results based on your hypothesis; 3) how to calculate chi-square; 4) what is the degree of freedom; 5) what is the p-value, and 6) what is your conclusion (what does the p-value mean) If these two genes are linked, calculate the recombinant frequency. c. Explain why…
1. If you allow the original unknown plant to self-fertilize, what is the probability of recovering offspring with wrinkled, green OR round, yellow peas? Complete the following steps to answer the question: a. What is the cross? (Write out the genotypes being crossed, based on your answer to 3c.) b. What are the target genotypes? (Use the Y_ and R_ notation). c. Break it down into single gene crosses: i. At the R locus only, what ratio of round:wrinkled do you expect from the cross? ii. At the Y locus only, what ratio of yellow:green do you expect from the cross? d. What is the total probability of getting offspring with wrinkled, green OR round, yellow peas? Use the multiplication and addition rules and show your work!
1. Fine spines (s), smooth fruit (tu) and uniform fruit color (u) are three recessive traits in cucumbers, the genes for which are linked on the same chromosome. A cucumber plant heterozygous for all three traits is used in a testcross, and the following progeny are produced by this testcross: S U Tu 2 s u Tu 70 S u Tu 21 s u tu 4 S U tu 82 s U tu 21 s U Tu 13 S u tu 17 Total=230 a) Determine the order of these three genes on the chromosome. b) Calculate the map distances between the genes. Show work.
3. If the a and b loci are 40 cM apart and an AA BB individual and an aa bb individual mate:a. What gametes will the F1 individuals produce, andin what proportions? What phenotypic classes inwhat proportions are expected in the F2 generation(assuming complete dominance for both genes)?b. If the original cross was AA bb × aa BB, whatgametic proportions would emerge from the F1?What would be the result in the F2 generation?
6. The following is a linkage map of chromosome 5 for three genes in tomato: vs. If (leafy) Lf (normal) J (jointed} vs. į (jointless) W (non-wilty) vs. w (wilty) Lf W 17 11 The cross between the triple heterozygote (Lf J W/ If j w) and a triple homozygous recessive produced 600 progeny. Assume that there is no interference in the Lf-W region. Give the expected number of individuals for each of the following progeny types and show complete solutions. with crossover in the Lf-J and J-W regions with crossover in the Lf-J region with crossover in the J-W region without crossover in the Lf-W region a. b. C. d.
1. The allele G for yellow stigma is completely dominant to green (g). Supposingtwo strains of autotetraploid plants are available and their genotypes are as follows:GGgg – in this plant the gene is close to the centromereGggg – in this plant the gene is far from the centromere If these two plants are crossed:a) provide the gametes that can be obtained from the two plants;b) provide the genotypic and phenotypic ratios of the offspring. 2. Consider the illustration below. Diagram the configuration you would observe at Anaphase I if crossing-over happens within the inversion. (IMAGE ATTACHED)
2. Pea plants have two alleles for pea color: Y is the dominant allele and produces yellow peas; y is the 1 recessive allele and produces green peas. Consider two parental pea plants each have the genotype Yy. Place the parental alleles on the axes of the Punnett square at right and fill in the boxes corresponding to each offspring that would result from fertilization events between the parental gametes. a. Of the four possible offspring, how many would have the genotype YY? b. Of the four possible offspring, how many would have the genotype Yy? c. Of the four possible offspring, how many would have the genotype yy? d. What is the probability of an offspring from this cross having yellow peas? e. What is the probability of an offspring from this cross have green peas?
9. In the F2 Generation, both the male and female pea plants are heterozygous for round/wrinkles seeds. 1)Draw a Punnett square that shows this cross. 2)What are the possible genotypes? 3)What are the possible phenotypes? 10. In pea plants, the allele for smooth pods (P) is dominant over the allele for pinched pods (p). Construct a Punnett Square that shows a cross between an PP plant and an Pp plant. Predict what percent of the offspring are likely to have smooth pods. Essay: Is it possible for a son to inherit an allele on an X chromosome from his father? Explain why or why not.
5. A cross between two wild-type flies gave progeny all of which were wild type. When vg e they were test crossed to flies the following results were obtained: vg e (a) 4 of the test crosses gave wild type, vestigal ebony, vestigal and ebony in a 1:1:1:1 ratio. (b) 4 of the test crosses gave all wild type. (c) 4 of the test crosses gave vestigal and wild type in a 1:1 ratio. (d) 4 of the test crosses gave ebony and wild type in a 1:1 ratio. What are the genotypes of the original pair of wild-type flies?
1. You are given a female F1 of unknown genotype. You cross the female fly to a homozygous male that has forked bristles and malformed eyes. The offspring of the cross is shown below: (Define symbols for your traits) Phenotype Forked bristles, normal eyes 752 Number Genotype Forked bristles, malformed 56 eyes Malformed eyes, normal bristles Normal eyes, normal bristles 820 64 a. What are the genotypes of the offspring? b. Based on the progeny, what were the genotypes of the F1 parents? What is the distance between for and mal?
4. In Drosophila melanogaster, a yellow-bodied (dark coloured) male with vestigial (underformed) wings is crossed to a wildtype female (brown body, red eyes). The F1 generation are all wildtypes. An F1 male and female are crossed and the F2 progeny consists of 16 vestigial-winged males with yellow bodies, 48 yellow males with normal wings, 15 males with vestigial wings and yellow bodies, 49 wildtype males, 31 vestigial winged females with brown bodies and 97 wildtype females. Explain the inheritance pattern of the 2 genes.
1.What are the phenotypes of the parents of the corn dihybrid cross described above? 2. What are the possible genotypes of the parent gametes of the corn dihybrid cross described above? 3.What is the phenotype of the F1 generation of the corn dihybrid cross described above?