In Neurospora (an ascomycete) the following cross is made: gly+ X gly-. The resulting asci are...
In Neurospora (an ascomycete) the following cross is made: gly+ X gly-. The resulting asci are as follows:ascus 1 = gly+ gly+ gly- gly- gly- gly- gly+ gly+ (5); ascus 2 = gly- gly- gly- gly- gly+ gly+ gly+ gly+ (31); ascus 3 = gly- gly- gly+ gly+ gly- gly- gly+ gly+ (7);ascus 4 = gly+ gly+ gly- gly- gly+ gly+ gly- gly- (6); ascus 5 = gly+ gly+ gly+ gly+ gly- gly- gly- gly- (33); ascus 6 = gly- gly- gly+ gly+ gly+ gly+ gly- gly- (6); total = 88. Which asci represent the products of a crossover between the gene and its centromere?
a. 2 and 5
b. 1, 3, 4 and 6
c. 2, 4 and 6
d. 3 and 4
e. 1, 2 and 5
Homework Answers
a. gly- gly- gly- gly- gly+ gly+ gly+ gly+ and gly+ gly+ gly+ gly+gly- gly- gly- gly- represents the products of a crossover between gene and its centromere.
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In Neurospora (an ascomycete) the following cross is made: gly+
X gly-. The resulting asci are...
From the data provided in the previous question, calculate the map distance between the gene and...
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14..........In Neurospora (a fungus), a complementation test was performed on tive haploid mutants Wild-type in appearance,...
14..........In Neurospora (a fungus), a complementation test was performed on tive haploid mutants Wild-type in appearance, and means showed abnormal branching. (3 pts) It the table below, complementation crosses were made to establish which mutants rescue the mutation. A complementation group will contain mutants that can rescue the defective phenotype. OWN These results indicate that the mutations were in A) 1 gene. B) 2 genes. C) 3 genes. D) 4 genes. The polarity of DNA synthesis is: E) 5 genes....
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1. A genetic cross in which the inheritance of two traits is observed is called a...
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1. The following ordered tetrads were obtained by crossing a strain of Neurospora requiring histadine with a strain requiring phenylalanine. (Use the data to answer 1-4). А his h is his to his phe his phe phe $ phe his to his phe his phe poi phe his oth his t h is phe + phe op phe ething to his phe a rethe phe his file + phe ob + phe oth + olio of his $o ele +...
In the figure, which number produces haploid gametes by mitosis? 1 2 3 4 In the figure, which structure produces haploid spores by meiosis? 1 2 3 4 If four of the original colonists died before they produced offspring, the ratios of genotypes could be quite different in the subsequent generations. This would be an example of diploidy. gene flow, genetic drift. disruptive selection. stabilizing selection. Each of the following questions have a 3.points value: Please use the following information...
. . . Activity E. Predicting the outcome of a dihybrid cross The resulting phenotypic ratios in the F2 generation of a dihybrid cross (2 traits) can be quite different than those observed from a monohybrid cross. But the process is essentially the same. First you list all possible gametes each parent and subsequent parents can produce. Second, you then assign the gamete possibilities to the Punnett square and fill it in. Finally you count the progeny and determine the...
Question 33 10 pts Using the test cross data in the table below, answer the following questions. Be sure to answer all three parts! count phenotype PDB PDB PdB PDb pdB pDb Pdb pdb total 756 59 414 21 23 417 60 750 2500 1. Which genotypes are non-recombinants? (2 points) 2. Which gene is in the middle? (2 points) 3. Determine the genetic distances between each gene on the "outside” of the group of three to the gene in...
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