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The carrying capacity of meadow voles fluctuates periodically roughly on a 5 year cycle. If the long-term carrying capacity of voles in a patch of meadow is 100 individuals and total amplitude of fluctuations around carrying capacity is 30 (i.e., from the low to the high), plot the trajectory of the population over 30 years, beginning with a population size that is exactly at K.
Gien that prokayokic organisms are unable to undergo meiosis, what are the methods by which they acquire new genetic information?
Describe how vestigial structures provide clues about a species' evolutionary past. Illustrate the argument with vestigial structures found in humans or other real species.
Determine which variable is the independent variable--the variable that was controlled by the researchers? Is the independent variable on the x -axis or the y -axis?
How many different combinations of phenotypes could exist of these 7 paired traits . What proportion would be heterozygous in every trait after 2 years.
Hydrolysis of of cake mix yields glucose, fructose, glycerol, and amino acids, molecules with hydrocarbon chains and a carboxyl group at the end. Is the cake mix fat free.
In Neurospora, the a locus is 5 mu from the centromere on chromosome. The b locus is 10 mu from the centromere on chromosome 7. From the cross of a b+ (x) a+ b,
Biological recognition is significant in many processes explain how the process of recognition occurs while an organism recognizes other members of their own species.
Plants may be 10, 20, 30, 40, 50, 60 or 70 cm high where plant high is under polygenic control. A true-breeding plant that is 10 cm is crossed to another true-breeding plant that is 50 cm.
Prader-Willi syndrome is caused by the deletion of the paternal copy of a small section of human chromosome fifteen. In normal individuals, only the paternal copies of the genes in this section of chromosome fifteen are expressed;
RNAse is an enzyme that cleaves the P--O^5' bond in RNA. it has two His residues in the active site. Suggest a plausible explanation why the enzyme activity changes when pH is increased or decreased from ~pH 6.0.
Assume you isolate the enzyme that synthesizes folic acid in bacteria and conduct few enzyme kinetics experiments. You discover, not surprisingly, that sulfa drugs inhibit enzyme's activity
Explain a muscle contraction beginning with the motor neuron to relaxation of the muscle. Discuss the physiological relationship of the muscular and skeletal system.
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