A bacterium with genotype A+B-C-was transduced by a particle carrying the linked genes A-B+C+, and A+B+C+...
A bacterium with genotype A+B-C-was transduced by a particle carrying the linked genes A-B+C+, and A+B+C+ recombinants were selected. The reciprocal cross was also performed. The number of A+B+C+ recombinants was the same in both the first cross and the reciprocal cross. What information does this give you about the order of the three genes?
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A bacterium with genotype A+B-C-was transduced by a particle
carrying the linked genes A-B+C+, and A+B+C+...
Question: A bacterium with genotype A+B-C-was transduced by a particle carrying the linked genes A-B+C+, and...
Question: A bacterium with genotype A+B-C-was transduced by a particle carrying the linked genes A-B+C+, and A+B+C+ recombinants were selected. The reciprocal cross was also performed. The number of A+B+C+ recombinants was the same in both the first cross and the reciprocal cross. What information does this give you about the order of the three genes? (please explain in as much details)- these genes are assumed as any random genes
Assume genes A and B are linked and separated by 21.4 m.u. A man with genotype...
Assume genes A and B are linked and separated by 21.4 m.u. A man with genotype AaBb marries a woman who is aabb. The man's father was AABB. Determine the probability that their first two children will both be ab/ab? Show all your work.
43. Genes a and b are X-linked and are located 7 mu apart on the X...
43. Genes a and b are X-linked and are located 7 mu apart on the X chromosome of Drosophila. A female of genotype a+ b/a b+ is mated with a wild-type (a+b+/Y). a. What is the probability that one of her sons will be either a+b+ or a b+ in phenotype? b. What is the probability that one of her daughters will be a+b+ in phenotype? 44. Three recessive autosomal mutations in Drosophila: a versus wild-type A. b versus B,...
You are following 4 genes (A, B, C, D) on the same chromosome. The genotype of...
You are following 4 genes (A, B, C, D) on the same chromosome. The genotype of a heterozygote, displaying the correct gene order, is shown below. ABCD/abcd Compared to the heterozygote above, what has happened in the following: ABCBCD/abcd Answer 1Choose...Duplication of a chromosomal region/Inversion of a chromosomal region/Translocation of a chromosomal region/Reciprocal translocation/Deletion of a chromosomal region ABCABCD/abcd Answer 2Choose...Duplication of a chromosomal region/Inversion of a chromosomal region/Translocation of a chromosomal region/Reciprocal translocation/Deletion of a chromosomal region ABCD/adcb Answer...
In Drosophila, the genes for black (b) body and curved (c) wings are linked on the...
In Drosophila, the genes for black (b) body and curved (c) wings are linked on the same chromosome. The frequency of recombination between b---c is 0.276. How many recombinant offspring would be expected if 2000 progeny were produced from a testcross between a female heterozygous for both genes and a homozygous recessive male?
Three plant genes, A, B, and C, are linked and occur in the following order. Genetic...
Three plant genes, A, B, and C, are linked and occur in the following order. Genetic distances are given as map units (m.u.): A________10 m.u.______B_____0 m.u.__C The genes underlie the following phenotypes: A/_ = blue flowers, a/a = white flowers B/_ = tall stems, b/b = short stems C/_ = green leaves, c/c = red leaves You cross two individuals with the following genotypes: AbC/AbC x aBc/aBc If you self the resulting F1 the proportion of the offspring that will...
Mapping genes with recombination frequencies in Drosophila 1. Suppose you know of three linked loci on...
Mapping genes with recombination frequencies in Drosophila 1. Suppose you know of three linked loci on the Drosophila X chromosome (a, b, and c). Assume that you are starting out with true-breeding stocks that show all three recessive traits and true-breeding stocks that show all three dominant traits. A. If you wanted to do a 3-point test cross to map the three loci, how would you set up the cross? What genotypes do you use for males and females in...
Mapping genes with recombination frequencies in Drosopna 1. Suppose you know of three linked loci on...
Mapping genes with recombination frequencies in Drosopna 1. Suppose you know of three linked loci on the Drosophila X chromosome (a, b, and c). Assume that you are starting out with true-breeding stocks that show all three recessive traits and true-breeding stocks that show all three dominant traits. A. If you wanted to do a 3-point test cross to map the three loci, how would you set up the cross? What genotypes do you use for males and females in...
36. The recessive autosomal maize genes sh and bz are linked and 40 map units apart,...
36. The recessive autosomal maize genes sh and bz are linked and 40 map units apart, If a plant with the genotype sh bz/ sh bz is selfed, what percentage of the progeny will be double recessive? 37. If the recombination frequency between the linked autosomal genes A and B in Drosophila is 15 percent, what phenotypic frequencies would you expect from a cross AB/ab females x AB/ab males? (There is no crossing over in Drosophila males). 38. In the...
For Drosophila, let’s consider three genes a, b, and c. We know where a and b...
For Drosophila, let’s consider three genes a, b, and c. We know where a and b are located, and have a nice idea about c. You conduct a three-point cross to figure it out for sure. We’ll use a, b, & c to refer to the three mutants, and + to refer to the wild-types. Here are the progeny counts from a heterozygote by homozygous mutant wild-type: a, b, c: 770 +, +, +: 384 a, +, +: 80 +,...
43. Genes a and b are X-linked and are located 7 mu apart on the X chromosome of Drosophila. A female of genotype a+ b/a b+ is mated with a wild-type (a+b+/Y). a. What is the probability that one of her sons will be either a+b+ or a b+ in phenotype? b. What is the probability that one of her daughters will be a+b+ in phenotype? 44. Three recessive autosomal mutations in Drosophila: a versus wild-type A. b versus B,...
Mapping genes with recombination frequencies in Drosophila 1. Suppose you know of three linked loci on the Drosophila X chromosome (a, b, and c). Assume that you are starting out with true-breeding stocks that show all three recessive traits and true-breeding stocks that show all three dominant traits. A. If you wanted to do a 3-point test cross to map the three loci, how would you set up the cross? What genotypes do you use for males and females in...
Mapping genes with recombination frequencies in Drosopna 1. Suppose you know of three linked loci on the Drosophila X chromosome (a, b, and c). Assume that you are starting out with true-breeding stocks that show all three recessive traits and true-breeding stocks that show all three dominant traits. A. If you wanted to do a 3-point test cross to map the three loci, how would you set up the cross? What genotypes do you use for males and females in...
36. The recessive autosomal maize genes sh and bz are linked and 40 map units apart, If a plant with the genotype sh bz/ sh bz is selfed, what percentage of the progeny will be double recessive? 37. If the recombination frequency between the linked autosomal genes A and B in Drosophila is 15 percent, what phenotypic frequencies would you expect from a cross AB/ab females x AB/ab males? (There is no crossing over in Drosophila males). 38. In the...
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