Example 2: 1  a sporadic form, which is caused by a somatic mutation in each of the two RB genes in a cell. 2  a familial (inherited) form, which is caused by a somatic mutation to one RB gene in a cell that already has one mutant RB gene inherited through the germline from a parent.
For the month of September 2012, Ketchikan reported average temperatures of 53.3Â°F, 0.8Â°F above the long-term mean of 52.5Â°F. The maximum temperature for the month was 67Â°F, which occurred on the 7th, while the minimum (41Â°F) was reported on the 16th.
Average daytime summer temperatures range from approximately 55 to 78 degrees Fahrenheit (13 to 26 degrees Celsius); average daytime winter temperatures are about 5 to 30 degrees (-15 to -1 degrees Celsius). Anchorage has a frost-free growing season that averages slightly over 100 days.Average January low and high temperatures at Ted Stevens Anchorage International Airport (PANC) are 11 Â°F/23 Â°F (-11 Â°C/-5 Â°C) with an average winter snowfall of 75.5 inches (192 cm).The weather on any given day and indeed for entire seasons can be very unpredictable.he average annual precipitation at the airport is 16.63 inches (422 mm). Because of Anchorage's latitude, summer days are very long and winter daylight hours are very short. Anchorage is often cloudy during the winter, which decreases the amount of sunlight experienced by residents.