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Q1. Two species of zooplankton (Daphnia and Bosmina) are both limited by availability of their food (phytoplankton). When grown without Daphnia, Bosmina reaches an equilibrium density of 1000 individuals/liter and drives phytoplankton concentrations down to 30 cells/ml (i.e., at [phytoplankton]>30 cells/ml, Bosmina shows positive growth). In the absence of Bosmina, Daphnia reaches a density of 50 individuals/liter and drives phytoplankton concentrations down to 10 cells/ml. You now grow Daphnia and Bosmina together. Suppose they remain limited by phytoplankton.
Q2. Erminette fowls have mostly light-coloured feathers with an occasional black one, giving a flecked appearance. A cross of two erminettes produced a total of 48 progeny, consisting of 22 erminettes, 14 blacks, and 12 whites. What genetic basis of erminette pattern is suggested? How would you test your hypothesis?
Determine what kind of DNA mutation in a gene would result in the production of a shorter version of a protein missing amino acids in the middle of the protein
Explain how the hydrolysis and condensation reaction are vital to the human body? a) Explain how the carbohydrates like the starch can be utilized by muscle cells for energy b)Explain how proteins in steak can be utilized to make muscle fibers.
Which supports the idea that a membrane is asymmetric?
What is the function of a DNA binding protein and the operator andhow do these regulate an operon (the operon is repressible)?
During a cross between organisms having genotypes of AaBbCc and AaBbcc, what proportion of the offspring would be expected to be aaB_Cc?
How many BamHI sites are there in this circular plasmid and where are those BamHI sites? Please draw the map.
Discuss a major difference in the action of a water soluble hormone versus a lipid soluble hormone. The use of transport proteins.
A 10ml suspension of cr51 labelled red blood cells containing 3 x 108 cpm total radioactivity was injected into a subject, after 10minutes a small blood sample was taken ,found to contain 5x104 cpm, calculate the total blood volume the individual?
What are the brief and basic steps that are widely believed to have resulted in the origin of the 1st bacteria from nonliving precursors?
Nitrogen fixation represents a process by which atmospheric nitrogen is oxidized to make 2 ammonium ions.
A student encounters an animal embryo at the eight-cell stage. The 4-smaller cells that comprise one hemisphere of the embryo seem to be rotated forty-five degrees and to lie in the grooves between larger, underlying cells.
Which of the following pairs of terms do not belong together?
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