Some highly degraded DNA was collected from a crime scene. Upon analysis, forensic scientists were only able to accurately sequence one 450-nucleotide-long segment of DNA from a Y chromosome. There are five suspects in the case, but they have fled the state. However, they all have large extended families in the area. How can the police narrow the search to just one suspect?

Greg goes to a high school and observes the way students talk to each other. he makes notes on the words used, the atmosphere of the school and the way the students present themselves to each other. this is an example of a( research method.

What city was divided between communism and democracy/capitalism after world war 2

Dr. redbull conducts a study to determine whether her new energy drink children perform better on spelling tests. she randomly assigns children to one of two groups: group 1 receives her energy drink and group 2 receives water. she then gives both groups a spelling test and compares the results. which of the following is true about this study? a. group 1 is the dependent variable and group 2 is the independent variable. b. this is a correlational study. c. group 2 is the experimental group. d. the independent variable is the type of drink the children receive.