It depends on the map. If it's showing strictly British Columbia or Canada, it lops everything that isn't Canada/BC off, same as the maps of the US that show ONLY the US, and just the line of the borders, no Canada or Mexico.
If it IS showing other territories, then the borders are drawn in on land for Alaska and the Panhandle (which is sometimes greyed out), same as with the main border with the States (also greyed out, if the map is focusing on Canada alone), and then some kind of demarcation (usually a dotted line, but sometimes simply the grey fill again on the non-Canadian bits) continues out into the Pacific to international waters, to show where the border is there. Everything on the southern side is Canadian; everything north of that line is US territory.
Alaskan maps may do things differently, but all the maps I've ever seen, as a resident of BC, either on paper or electronic, do it one of these two ways.
This map: http://en.wikipedia.org/wiki/File:Bcmap.PNG and this map: http://upload.wikimedia.org/wikipedia/commons/thumb/6/67/BC-relief.png/200px-BC-relief.png are the standard lopping-everything-else-off style.
This map: http://upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Skeena_Watershed.png/288px-Skeena_Watershed.png is an example of the other sort, defining the non-Canadian land and islands with a different colour (greyed out, here).
Hope that helps! :-)
the province
Alaska borders British Columbia (province) and the Yukon Territory.The panhandle of Alaska, where Juneau and Sitka are located, is bordered to the west by British Columbia. The Territory of Yukon forms the western border with the wider part of Alaska.
British Columbia borders the US states of Washington, Idaho, Montana, and Alaska.
British Columbia.
Only one province borders Alaska: British Columbia, which borders the "panhandle" in the southernmost part of Alaska. Most of Alaska borders the Yukon Territory, but this is not officially a province.
northwestern British Columbia. right near the Alaska border.
the province
yes
British Columbia owns all the islands off its coast, the islands off the Alaskan coast belong to Alaska. The Queen Charlotte Islands, Dundas Island, Stephens Island and the islands below belong to British Columbia. Anything above Dundas Island is part of Alaska.
the Charlotte Islands belong to Canada
the province
the province
Both the Northwest Territories and British Columbia share borders with the Yukon and Alberta.
Yukon borders Alaska and British Columbia. Also, the Pacific Ocean...
Alaska does not border any state to the east. Alaska borders Canada to the east. Canada does not have states. Alaska borders Canada's province of British Columbia and Canada's Yukon Territory.
It lives in the Boreal Forest Regions of Alaska, Yukon, Western Northwest Territories, Northeastern British columbia, Northern Alberta, and Northwestern Saskatchewan.
Alaska borders British Columbia (province) and the Yukon Territory.The panhandle of Alaska, where Juneau and Sitka are located, is bordered to the west by British Columbia. The Territory of Yukon forms the western border with the wider part of Alaska.