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A case-control study was done in order to estimate the interrelationships between different risk factors for the myocardial infarction (heart disease). Information on smoking status was gathered from a total of 791 cases and controls. Present cigarette smoking, explained as smoking within the past three months, was reported by 158 of the 367 cases and 111 of the 424 controls.
a) Set up the suitable two-by-two table and determine a measure of association between the current smoking and myocardial infarction.
b) Determine a measure of the excess risk of myocardial infarction in cigarette smokers which is attributable to their smoking.
c) Specify any assumptions that you make in carrying out these calculations and provide interpretations for both calculations.
The digastric and omohyoid muscles are similar in that they both have________. Suprahyoid, Two bellies, 60
The group of molecular biologists is trying to synthesize a new artificial compound to mimic the effects of a known hormone that influences sexual behaviour. They have turned to you for advice.
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The phenotypic variances were 9.4 cm2 for the inbred strain and 26.4 cm2 for the randomly pollinated population. Guess the broad sense heritability of ear length in these populations. What are the usual frequencies of the gametes from a plant with th..
The sequence of the cloned DNA and the amino acids encoded by open reading frames. Stop codons are underlined and labelled 2 or 3 to indicate their reading frame.
If the genes were expressed in the cell, predict that signal would win out for the following combinations. Give details your reasoning.
The brown and scarlet mutations assort independently. If fruit flies that are heterozygous for both of these mutations are intercrossed, what sorts of progeny will they create, and in what proportions? Describe how you got the answer.
Which characteristic of cell membranes might explain why fat-soluble substances such as chloroform and ether rapidly affect cells.
A women is perspiring profusely with rapid breathing, breath smells like acetone and blood sugar is 650mg/ml, blood chemistry indicates acidosis, what is her diagnosis, is it hypoglicemia, but thrown off by rapid breathing.
What phenotypes would you expect in the F2, and in what actual numbers (not ratios) would you be expecting to find them. Describe the process of speciation. Comprise in the discussion the factors that can contribute to the maintenance of genetic isol..
In humans, a dimple in the chin is a single gene, autosomal dominant characteristic. A man with the dimpled chin, whose mother lacked dimpled chin.
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