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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.
Think about the phenomenon of bacterial resistance to antibiotics. How did the combination of human advances and basic evolutionary principles lead to this condition?
Many eukaryotic mRNAs, but not bacterial mRNAs, contain introns. Describe how these sequences are removed during the production of mature mRNA.
Microbiology and Environment, Write a report on topic Bioremediation. Bioremediation Factors:Bioremediation Strategies,
Determine the major trend in the evolution of land-based plants, starting from nonvascular plants to seed plants?
Explain how adult stem cells can sense and respond to the nutritional status of an animal. Explain what kind of cues an adult stem cell can respond to, and where these cues are coming from.
apply the alara concept for worker protection during replacement of a pump in a system where removable contamination
Which of the following are the Crown Groups of flowering plants? Mark all that apply.
Describe one familial genetic disease that is carried by a dominant gene and one that is carried by a recessive gene.
For a new mutation arising in the XYZ gene designated XYZG287 there is a linked allele, QRS2 ~100,000bp away on the same chromosome. After twenty generations find the estimated linkage disequilibrium.
Restriction enzyme HinfI cleaves a five nucleotide DNA sequence GA(A/T)TC. The ambiguity in the central position - (A/T) - means that either A or T can occur in the cleavage site.
Suppose that you have discovered two different transposable elements (A and B) in yeast and you inserted an intron into each of the elements. Following transposition of each transposable element, you examine the transposed elements to determine if..
q1. in examining a multicellular protist you notice that it uses pseudopods to engulf its food that it reproduces
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