This is known as enzyme digestion. On double stranded DNA the recognition sequence is on both strands, but runs in opposite directions. This allows the enzyme to cut both strands. Sometimes the cut is blunt, sometimes the cut is uneven with dangling nucleotides on one of the two strands.
Yet warm weather is a year round occurrence in San Diego. A day of 80 degrees can happen in any month but December. San Diego's nights are equally mild with an average of just ten nights a year when the thermometer doesnt drop below 70 degrees. Days per month in San Diego of at least 60, 70 or 80 Â°F.
The record high temperature at the National Weather Service office in San Diego of 111 Â°F (44 Â°C) was on September 26, 1963. The record low temperature was 25 Â°F (â4 Â°C) on January 7, 1913. The record high temperature was tied only once and happened on September 27, 2010, 47 years and two days after the set record. Several cities near San Diego broke their all-time records that day. Precipitation. San Diego has on average 146 sunny days and 117 partly cloudy days a year.