In Drosophila, a mutation caused a gene to be relocated close to the centromere. In flies with this mutation, some cells expressed the gene, while the gene remained silent in other cells (of the same cell type). This position effect variegation is due to ___.

Defend or refute the argument that the government has too large a presence in the agriculture industry.

Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data

Are the earth's ocean floor and continents the same age geologically? why or why not?