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The following table shows several bacterial strain lac operon genotypes (some are partial diploids).
a) Fill in the blanks in the “lactose absent” and “lactose present” columns in this table. (+) means significant levels of active ß-galactosidase enzyme can be detected. (–) means no significant levels of active ß-galactosidase enzyme. The first line is filled in for reference.Strain genotypeLactose absentLactose present1. lacI+ lacP+ lacO+ lacZ+ lacY+2. lacI+ lacP+ lacOc lacZ+ lacY+3. lacI+ lacP+ lacOc lacZ– lacY+4. lacIs lacP+ lacOc lacZ+ lacY+5. lacI– lacP+ lacO+ lacZ+ lacY+ / lacI+6. lacIs lacP+ lacO+ lacZ+ lacY+/ lac I+
b) If lactose is absent and glucose is present in the culture medium of strain 4, will significant levels of active ß-galactosidase enzyme be detected? Explain… in brief, just because there is lots of room left, you don’t need to fill it.
Colchicine inhibits the formation of the spindle fibers. Your instructor is interested in creating a polypoid hybrid between cucumbers and cantaloupe. Describe the steps he would have to go through to get this polyploidy. Include in your descripti..
Why were there complaints then about night-blindness, bone demineralization, and blood-clotting problems. If they have a large family, in what ways have to the colorblindness trait affect their children.
instructions throughout this virtual lab you will be using various assessment tools to assess the health and wellness
Would amylase isolated from any two organisms (for example, fish amylase vs. amylase from the small intestine of humans) show the same temperature optimum? Explain your answer.
q1. what unique aptitude do dna molecules have? why is this ability so important? what are the similarities and
Consider the following metabolic reaction: What is the (delta)G for this reaction when the concentration of 2-phosphoglycerate is 0.290 mM and the concentration of 3-phosphoglycerate is 2.90 mM at 37C?
Suppose that you start with a lysogenic strain of E. coli. In this strain, a mutation arises that results in the intracellular repressor level becoming twice as high as it normally would be.
In rabbits, black hair is due to a dominant gene; brown is recessive allele. Short hair is due to a different dominant gene carried at a location o a different chromesome.
what is the mechanism driving the bromothymol blue solution color change? This is a quesiton from my bio lab as how cellular respiration occurs in germinated beans, dry beans, or no beans at all. Anyone know?
You learn that a certain strain of bacteria has an interesting replication pattern. Every 5 hours, the number of bacteria colonies increase by 17%.
In a particular squash plant, white fruit is dominant to yellow fruit.A white fruited plant is crossed to a yellow fruited plant.Whe the seeds from this cross are planted.
a study wants to examine the relationship between student anxiety for an exam and the number of hours studied. the data
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