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Suppose you infect E. coli cells with two strains of T4 virus. One strain is minute (m), rapid lysis (r) and turbid (t); the other is wild-type for all three markers. The lytic products of this dual infection are plated on a lawn of E. coli and the morphology of the plaques are classified. The resulting 10, 342 plaques were distributed among eight phenotypes, as follows:
m r t 3467+ + + 3729m r + 853m + t 162m + + 520+ r t 474+ r + 172+ + t 965
You decide to repeat the exact same experiment as outlined above and this time you count and classify 25, 000 plaques? How many plaques would you expect to be wild-type for all three markers? (Hint: You will need to calculate the coefficient of coincidence for the cross above and apply that to your answer.)
What proportion of progeny would PHENOTYPICALLY resemble.
The cell walls if bacteria, fungi and plant cells and an extracellular matrix of animal cells are all external to the plasma membrane. Which is the characteristic of all these extracellular structures.
Find out any media piece (article, video, presentation, song, or other) related to scientific method and describe how it helped to better understand how the scientific method is used to create hypotheses and experiments.
What would be the amount of DNA in one of the grasshopper daughter cells right after cytokinesis? And Why.
Determine when glucagon binds its receptor there is an increase in the second messenger, cAMP. cAMP levels can be reduce by which of the following enzymes?
Determine which organ system are msot invovled with homeostasis and discuss the role of SNARE in exocytosis.
Describe why we have a cool dry winter and a warm wet summer in florida? Human population on earth has exhibited logistic growth. Why might this not continue?
Clarify how the procedure of meiosis assures that the chromosome number of a species remains the same from generation to generation.
If you continue adding drops of bromine to each, eventually lipids change color. For our experiment it took 14 for lard, 23 for olive oil, and 35 for corn oil. Yet, the iodine numbers for each were 59, 81, 123 respectively. Would you consider the ..
Recognizes true statements of cholesterol and its fluidity. Cholesterol increases membrane fluidity that otherwise contains mainly long chain saturated fatty acids.
In a pathway controlling flower color, a functioning copy of gene A is required to produce enzyme A, which catalyzes the synthesis of red pigment.
As a laboratory assistant you were asked to determine the total number of bacteria in the urine of a person with a urinary tract disorder.
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