Baking time 350 degrees 1 hour for every 1 1/2 pound. I use 2 pounds of chuck and 1 pound of sausage in my meatloaf and I always bake it at 350 for at least 3 hours but like I recommend cover with foil until the last 15 mins.aking time 350 degrees 1 hour for every 1 1/2 pound. I use 2 pounds of chuck and 1 pound of sausage in my meatloaf and I always bake it at 350 for at least 3 hours but like I recommend cover with foil until the last 15 mins.
Quick Answer. Ethanol is used in DNA extraction to force the DNA to precipitate in a solution. In order to collect a DNA sample, cells are broken down through agitation, then mixed with water, salt and ethanol to create an aqueous solution.
DNA is less soluble in isopropanol so it will fall out of solution faster and at a lower concentration, but the downside is that the salt will too. With ethanol, the DNA needs to be at a higher concentration to flocculate but the salt tends to stay soluble, even at cold temperatures.ut because salts are generally less soluble in isopropanol than in ethanol, they have more of a tendancy to co-precipitate with the DNA. So to lessen the chances of salt precipitation, isopropanol precipitations are carried our at room temperature with minimal incubation times.