Pre-adaptation may occur because a natural population carries a huge quantity of genetic variability. In diploid eukaryotes, this is a consequence of the system of sexual reproduction, where mutant alleles get partially shielded, for example, by the selective advantage of heterozygotes.daptation is the evolutionary process whereby an organism becomes better able to live in its habitat or habitats. 2. Adaptedness is the state of being adapted: the degree to which an organism is able to live and reproduce in a given set of habitats.
The average temperature in Whitehorse, Yt, Canada is slightly cold at -1 degrees Celsius (30.2 degrees Fahrenheit). Average monthly temperatures vary by 32.7 C (58.9F) which is a above moderate range. The mean daily temperature range/ variation is 10.4 C (18.7 F). July is the warmest month (mild) with a mean temperature of 14 degrees Celsius (57.2 degrees Fahrenheit).
Ketchikan reported slightly colder than average temperatures in July, with a mean temperature of 57.5Â°F, -0.2Â°F under the long-term mean of 57.7Â°F. The maximum temperature for the month was 75Â°F, which occurred on the 15th, while the minimum (43Â°F) was reported on the 3rd.n June, the temperature did reach a high of 81Â°F which occurred on the 23rd, tying the record for this day, set in 2004. 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.