Why does the united states experience winter during the months of november through early march

The United States are entirely located in the Northern Hemisphere. It is bordering Canada on the north, and the air masses that form over it have big influence on the climate of the United States. Most of the United States falls under the influence of the air masses coming from the north, with only the southern parts of the east and west coastlines not being heavily affected. The air masses that form over Canada are cold continental air masses. They move towards south, thus toward the United States in November, quickly pushing the warmer air masses, and replacing them, bringing in cold weather conditions, which last until March.

identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.

answer; i believe the correct answer is (replication is not conservative);