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A analyzer believes that cow's tail is used to ward off deer flies before they can bite. He attempts to correlate tail length with the number of welts caused by these flies biting cows. He samples 6 cows from the herd and finds:
Cow Tail length(cm) Welts
1 20 55
2 35 21
3 40 30
4 50 25
5 42 27
6 10 67
From this sample, calculate the standard deviation of the tail length, covariance and the correlation coefficient. Draw a scatterplot regarding the data.
2) Suppose the data from question 1 represented a population. What would be the new standard deviation, covariance, and correlation coefficient? As n gets larger, what happens to the covariance? Explain.(Iknow the answer to question#1, so please answer Q#2. thank you)
Think about the two separate experiments. In the first experiment, a DNA strand containing a+ b+ genes were placed in a culture of bacteria with a- b- genes.
Explain the cardiac cycle beginning with atrial systole. Include what happens during all of the steps, including atrial systole and diastole, and ventricular systole and diastole.
Suppose that you have just discovered a new pathogen whose genome contains 29.1 percent A, 22.3% T, 25.8% C, and 22.8% G based on the relative molar concentrations of each nitrogenous base.
Give details how those mutations can potentially result in cancer. Make sure you list all references used for information and images.
Select a specific gene and a specific alteration. Explain the effects of the modifications and why it might contribute to the cancer.
Assume you are studying fruit fly wing development. The wingless gene determines shape of wings. The phenotype associated with dominant allele, W, is normal wing development.
Her breath smells like acetone and her blood glucose test out at 650mg/100ml of blood. She is in acidosis. What hormone must be administered to her and why. Where may she find such DNA.
Describe how the cell derives additional energy by switching . What was the key factor that determined this change.
The intestinal stem cell sits exactly at position four in the crypt. What experiment was performed to find out it is the stem cell? At that position,
Describe why you can predict that meiosis gives rise to genetic differences between parent's cells and daughter cells in fewer cell divisions than mitosis does.
What effects may the reintroduction of wolves have on the ecological communities in the region? What might be done to mitigate the conflicts between ranchers and wolves.
Discuss how does the altered primary structure of hemoglobin from sickle cell patients affect its tertiary structure?
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