Xyz factory has hired a quality assurance research group to investigate chemical handling by its employees. the workers are concerned that the chemicals are making them ill. the research group conducts a poll of the employees to determine how many times each has been hospitalized over the course of a year. then the research group goes to another plant and asks the same poll questions. the two sets of data are compared. in both factories, few people were hospitalized, so the research group concludes there are no health problems. there are often aspects of research that contain bias, which skews the data. which statement below could explain skewed data that did not result from bias on the part of the research company? a. the factory hired the research group. b. polls are not always valid. c. not everyone who is sick must go to the hospital. d. each factory worker may have handled different materials.

C. Not everyone who is sick must go to the hospital.

Explanation:

We know that going to the hospital implies high expenses and decreases the worker's budget, medical care is not cheap and for this reason, not everyone that this patient goes to the hospital. When the disease is neither serious nor debilitating, people prefer not to seek medical attention, either for lack of economic resources or for any other reason. Therefore, the research team shown in the question above, was wrong to ask workers how many times they were hospitalized, because they may have been sick without going to the hospital. Ideally, the research team should assess the health of each worker.

identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.

the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

hope this : )