How can an error in chromosome segregation during meiosis affect inheritance of the SRY gene?

Aneuron is stimulated with an electric pulse. the action potential is detected at a point 3.70 cm down the axon 0.0052 s later.when the action potential is detected 7.20 cm from the point of stimulation, the time required is 0.0063 s. what is the speed of the electric pulse along the axon? (why are two measurements needed instead of only one? )

The use of dna as evidence in criminal investigations became possible because of the

Cell specialization occurs by the process ofa. reproductionb. differentiationc. maturationd. growth