The structure in cells that contains DNA and protein is the nucleosome, found in the nucleus. In the nucleus of the cell, DNA is exists in the form of a long helical thread. It order to fit inside the nucleus, the DNA thread must be compressed enough to do so.
The cell accomplishes this by wrapping the DNA thread around a protein called histone. A single unit of DNA and histone octamer (called octamer because it consists of 8 proteins) is called a nucleosome.
The entire stretch of DNA in an average human cell is about 2 meters in length and would never fit inside a cell if not for histone proteins.
Since more than ten years ago, some authors have argued that there is a so-called "replication (or reproducibility) crisis" in a number of disciplines, including the biomedical, behavioral, and social sciences, due to the inability to replicate findings in those fields. There are studies that look at a wide range of aspects of the reproducibility of science evidence, including definitions of reproducibility,
journals published concerns about reproducibility in the scientific literature and the public press, variables involved in assessing the success of efforts to reproduce a study, suggested factors responsible for reproducibility failures, types of validity of experimental studies, threats to validity as they relate to reproducibility, and experimental studies that are more likely to be valid than others.
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Answer:
because they did it on youth children with the ages of 13-15 and was only 12 percent of them, when they really should be looking at older individuals so they can combat the harmful effects of tobacco in the future or make the effects less "harmful"
Explanation: