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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?
Few decades ago, most population geneticists believed that populations are genetically uniform, except for rare deleterious mutations.
Describe the hemolysis produced by alpha-hemolytic, beta-hemolytic, and nonhemolytic streptococci.
Explain why do plasma glucose concentrations start to decline after prolonged endurance exercise?
Diagnosis of CML can be done using a Southern blot to detect the junction fragment. In early stages of CML most patients are heterozygous for the genome rearrangement,
What are the four major arthropod phyla living today? which one contains the insects,and which the spider,and which the centipedes?
select a chromosomal disorder from the March of Dimes Foundation Website.
p53 is a tumor-suppressor gene that is involved in 50% of all cancers. What is its normal function in cells? A.It activates cell growth B.It activates cell death C.It activates DNA repair D.b and c E.a and b Please explain how you got your answer.
Why benefits are strategically significant to employers and what is some main strategic consideration. What parts of the cell did molecules in this tube probably come from? Describe briefly.
Explain how the silent substitution rate (single base substitutions at sequence locations that do not affect the amino acid sequence) can be used to estimate the base mutation rate (µ).
Compare the utility of APD, and NADPH, generated by photosynthesis, in terms of the Calvin Cycle?
The process by which organisms acquire DNA from different species is most accurately referred to as.
Would you describe your study area as an area of high or low biodiversity?
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