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Diploid strain genotypes With Galactose Without Galactose wild-type/wild-type AGAL4/AGAL4 MIG1* (Mig1 always in the nucleus)/wild-type AGAL8O/wild-type,...
9) In an attempt to better understand GAL gene regulation, an undergraduate researcher performed a series...
9) In an attempt to better understand GAL gene regulation, an undergraduate researcher performed a series of mating experiments between haploid yeast strains that contained different mutations in the gal regulatory genes, generating the different diploid genotypes shown below ! (note, for each strain, only the changes, relative to wild-type, are indicated; assume that all other genes are wild-type). For each strain, indicate whether the gal genes would be ON or OFF when grown with or without galactose (assume that...
The genotypes of the lac operon of several haploid and partial diploid E. coli strains are...
The genotypes of the lac operon of several haploid and
partial diploid E. coli strains are given. For each genotype,
indicate the status of B-galactosidase synthesis as either Yes or
No. Assume that no glucose is present and cAMP is rich in the
growth medium.
• Oc is a mutant operator that cannot be bound
by the wild type repressor protein.
• Is is a mutant of repressor gene and cannot
bind to operator
Haploid Partial Diploid IOZY IOCZY ISOZY...
please help with part A and B. 2. A yeast geneticist isolates two different haploid mutant...
please help with part A and B.
2. A yeast geneticist isolates two different haploid mutant yeast strains, Strain A and Strain B, which cannot grow unless the amino acid leucine is added to the growth media. Wild-type yeast strains can make their own leucine and do not require that it be added to the growth media. The geneticist discovers that each mutant yeast strain contains a single recessive mutation that leads to the observed leucine-requiring phenotype. When she crosses...
QUESTION 8 The following situations (1-4) involve different types of gene regulation in prokaryotic cells as shown. OFF...
QUESTION 8 The following situations (1-4) involve different types of gene regulation in prokaryotic cells as shown. OFF and ON reter to whether the gene is transcribed or not. Draw clearly-labelled regulatory proteins and effector molecules in each diagram to explain how the regulation works in each case. The first one has been done for you as an example a) (6 marks) Type of Regulation Regulatory protein effector molecule 1 DNA X negative inducible OFF ON 2 negative repressible DNA...
2. You have identified a mutant E. coli strain that cannot synthesize histidine (His). To determine...
2. You have identified a mutant E. coli strain that cannot synthesize histidine (His). To determine the location of the his mutation on the E. coli chromosome, you perform interrupted mating experiments with 5 different Hfr strains. The following chart shows the time of entry (minutes, in parentheses) of the wild-type alleles of the first 5 markers (mutant genes) into the His strain. + + Hfr A. Hfr B Hfr CH Hfr D. Hfr E- his (3) cys (11)- arg...
A genetically engineered plasmid Ficarries all of the elements of the lac operon, but replaces the...
A genetically engineered plasmid Ficarries all of the elements of the lac operon, but replaces the structural genes with the reporter gene green fluorescent protein (GFP). The repressor allele cannot bind lactose, and the OC allele cannot be bound by the repressor. Given the following genotypes and growth media that does not contain glucose, indicate in the table below whether you expect to see b-galactosidase activity and glowing green colonies of E. coli by selecting Yes or No. growth media...
9) In an attempt to better understand GAL gene regulation, an undergraduate researcher performed a series of mating experiments between haploid yeast strains that contained different mutations in the gal regulatory genes, generating the different diploid genotypes shown below ! (note, for each strain, only the changes, relative to wild-type, are indicated; assume that all other genes are wild-type). For each strain, indicate whether the gal genes would be ON or OFF when grown with or without galactose (assume that...
The genotypes of the lac operon of several haploid and
partial diploid E. coli strains are given. For each genotype,
indicate the status of B-galactosidase synthesis as either Yes or
No. Assume that no glucose is present and cAMP is rich in the
growth medium.
• Oc is a mutant operator that cannot be bound
by the wild type repressor protein.
• Is is a mutant of repressor gene and cannot
bind to operator
Haploid Partial Diploid IOZY IOCZY ISOZY...
please help with part A and B.
2. A yeast geneticist isolates two different haploid mutant yeast strains, Strain A and Strain B, which cannot grow unless the amino acid leucine is added to the growth media. Wild-type yeast strains can make their own leucine and do not require that it be added to the growth media. The geneticist discovers that each mutant yeast strain contains a single recessive mutation that leads to the observed leucine-requiring phenotype. When she crosses...
QUESTION 8 The following situations (1-4) involve different types of gene regulation in prokaryotic cells as shown. OFF and ON reter to whether the gene is transcribed or not. Draw clearly-labelled regulatory proteins and effector molecules in each diagram to explain how the regulation works in each case. The first one has been done for you as an example a) (6 marks) Type of Regulation Regulatory protein effector molecule 1 DNA X negative inducible OFF ON 2 negative repressible DNA...
2. You have identified a mutant E. coli strain that cannot synthesize histidine (His). To determine the location of the his mutation on the E. coli chromosome, you perform interrupted mating experiments with 5 different Hfr strains. The following chart shows the time of entry (minutes, in parentheses) of the wild-type alleles of the first 5 markers (mutant genes) into the His strain. + + Hfr A. Hfr B Hfr CH Hfr D. Hfr E- his (3) cys (11)- arg...
A genetically engineered plasmid Ficarries all of the elements of the lac operon, but replaces the structural genes with the reporter gene green fluorescent protein (GFP). The repressor allele cannot bind lactose, and the OC allele cannot be bound by the repressor. Given the following genotypes and growth media that does not contain glucose, indicate in the table below whether you expect to see b-galactosidase activity and glowing green colonies of E. coli by selecting Yes or No. growth media...
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