The Long Island Breast Cancer Study tested the hypothesis that environmental pollution was causing the relatively high rates of
breast cancer among residents of Suffolk and Nassau counties of New York. Epidemiologists identified a group of 1,420 women who were diagnosed with breast cancer between 1984 and 1986 and compared their residential histories over a 20 year period with those of a matched group of healthy women. What kind of epidemiologic study was this?a) Cohortb) Interventionc) Case-controld) Prospective
Case Control <em>is a study comparing patients with a disease or outcome of interest (cases) with patients without the disease or outcome (controls) and looking back prospectively to compare how often the risk factor exposure is present in each group to determine the relationship between the risk factor and the disease.</em>
Case control studies are performed because there is no effort to interfere and no attempt is made to change the disease path.
The answer is sister chromatids split and four haploid daughter cells are formed. I tried putting in the other answer and it was wrong. Hope this helps!
It is still unknown what exactly causes multiple sclerosis but there are theories that claim it is due to large physical strain put on the body. That's why there are numerous women who get it after child birth.
