Mendel′s laws are only valid under the presumption that:

a. the case in point is monogenic heredity
b. the genes observed are in linkage
c. the genes for the traits observed are localised on one chromosome
d. if the genes observed are linked to chromosome X

Iwolud you, but i dont know what you are asking.

Are you asking about a street map usage  if so here is your answer  a street map for a very limited area could simply be a bit map or a .jpg image.  but a more general map would probably store the streets as vectors.  but you shouldn't assume that there is one way to do it

Breacking the law and lazy