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Hamptonium is a radioactive substance that decays into two parts Monctonium and one part St. Johnite (i.e. 3 units of Hamptonium decays into 2 units of Monctonium and 1 unit of St. Johnite) . Hamptonium has a half-life of 1 million years. We find a rock that contains 20 units of Hamptonium and 40 units of Monctonium. If we assume that there was no Monctonium present when the rock was formed and no Hamptonium has been deposited in the rock since it was formed, how old is the rock.
1. Let's assume for this problem that the world is divided into blue-eyed people and brown-eyed people. Let's also assume for the sake of simplicity that there is only one gene responsible for eye color and that the allele for brown eyes (B) is do..
What is the effect of added succinate to rotenone-blocked, amytal-blocked, or cyanide-blocked mitochandria? In other words, can succinate help "bypass" the block? Explain.
Show (using both graphs and words) how the equilibrium theory of island biogeography could used to support the conclusion (despite the apparent contradiction). In addition include two other plausible explanations for this pattern.
What experiment would you design to determine the concentration of detergent that you could safely spread on the radish field that would reduce the germination rate of the seeds by only 10% compared with non-contaminated water?
how can a single gene code for more than one protein.
The gene coding for the first six amino acids on the beta chain of normal hemoglobin A has the base pair sequence DNA GTA CCA GAC TGA GGA CTC
The bacteria are allowed to grow overnight and are streaked on a plate using the technique that produces isolated colonies that are clones of the original. Samples of these colonies are then grown in four different media: nutrient broth plus ampicill..
Determine the cell biology of periodontal ligament tissues (PDL) originating from cranial neural-crest-derived extomesenchymal cells.
Suggest a suitable buffer range for each of the following substances.
Assume there is a picture of a neuron coming from the spinal cord and synapsing with a muscle fiber. Start in the neuron. Explain the stimulation of the soma.
Why is social clock an important consideration when understanding development. It is a useful tool for making comparisons across different generations to see if the hypothesized developmental course is valid.
A patient has esophageal cancer and should have a feeding tube inserted. The nurse tells the patient that the tube will be inserted surgically into the duodenum. The wife asks why the tube will not be inserted into the stomach directly.
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