Which variable would be most useful in making long term road and infastructure plans

In the family tree below, people with the recessive trait of attached earlobes are shaded gray.

Will someone me with this.. specialized cells which perform a particular function form: tissues organs or organism

This class has taught you that the use of science and medicine in practical ways has become an international endeavor. one of the greatest examples of an international science accomplishment is which allows the profiling of human dna, useful not only to science but also medicine. a) forensic science b) the fbi c) the human genome project d) bioterrorism