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Q1. A population of 200 healthy fishermen was followed for development of Schistosomiasis. After being followed for 4 years 20 developed Schistosomiasis. 30 fishermen were followed for 6 years and they left for other jobs. The remaining who never developed Schistosomiasis was followed for 8 years.
a. compute the number of person years of observation accrued by the population.
b. determine the Incidence rate of Schistosomiasis amongst fishermen.
Q2. While a tall homozygous plant was crossed with a short homozygous plant, the F1 offspring were all tall. No short plants were present in the F1 generation. Which principle does this situation represent?
Define membrane potential (Vm) and sodium equilibrium potential (ENa). Which of these, if any, changes during the course of an action potential?
If you used the 8900 kilojoules you expend in energy in one day to heat 55000 of water at 24, what would be the rise in temperature?
Briefly discuss the scientific and ethical considerations behind the cloning of whole organisms, especially humans.
Cindy is following the Adkins diet which has placed her body into ketosis resulting from increased lipolysis. The ketones decrease pH and cause metabolic acidosis. Identify two mechanisms that would homeostatically compensate.
DNA (3.5 x 108 base pairs) in diploid cells of Drosophila melanogaster is replicated in about 3 minutes. Assuming that all replication forks move at a constant rate of 104 base pairs per minute, what is the minimum number of replication units pres..
Explain why birth defects seem to rise as the age of the mother rises and what happens to the implanted egg if estrogen and progesterone levels fall?
Post an example of how bacteria are used to combat.
Assume if you were working with an organism like Arabidopsis, Drosophila, or any diploid organism that requires to use sexual reproduction to produce offspring.
justin was born at 41 weeks via a routine pregnancy. At 13 mos, he developed a staphylococcal abscess on his neck and was treated with antibiotics. At 15 mos he developed otitis media and severe sinusitis caused by Pseudomonas.
Construct the nuclear genome content of a 2n=4 organism at G1 and at metaphase, showing each chromosome and sister chromatid as a single vertical line.
In a population of cattle, the following color distribution was noted: 81% red (RR), 18% roan (Rr), and 1% (rr). Is this population in a Hardy-Weinberg equilibrium? What will be the distribution of genotypes in the next generation if the Hardy-Wei..
Two extensively inbred strains of summer squash - designated "crookneck" and "scallop" - are crossed. The length of fruit in the crookneck averages 40 cm and that in the scallop averages 7 cm.
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