Aproperty of matter that can be observed and measured, without changing its identity is known as a (n)

the answer is physical property

The answer is a physical property. This is because it states that nothing is being changed property wise. That is what gives away that it is physical. If it said that the composition of the atoms (and/or their bonds) were being changed or broken, then it would be a chemical property.

other information encoded in your genes might distinguish you from the others in the group

answer; motor (efferent)neurons;