DNA profiling (also called DNA fingerprinting, DNA testing, or DNA typing) is a forensic technique used to identify individuals by characteristics of their DNA.NA profiling (also called DNA fingerprinting, DNA testing, or DNA typing) is a forensic technique used to identify individuals by characteristics of their DNA.
Bluetooth headphones often have a range of up to 30 feet. Power on your Bluetooth headphones and place them near your computer. Press the Start button on your computer's desktop. Select Control Panel from the options that appear, followed by Network and Internet and then Set Up a Bluetooth-enabled Device..
I had the same problem: I plug in headphones, and sound comes out of the headphones and my laptop speakers. Here's how I fixed this problem: Go to Sound Preferences [click on the Sound icon in the top-right, on the bottom of the menu, you'll see sound preferences ].Next, go to the Output tab.Here, look at the bottom, where it says  Connector: . I think mine was on Analog Speakers [or possibly Analog Headphones]. had the same problem: I plug in headphones, and sound comes out of the headphones and my laptop speakers. Here's how I fixed this problem: Go to Sound Preferences [click on the Sound icon in the top-right, on the bottom of the menu, you'll see sound preferences ].