The answer is nucleotides
<span>size, small
Gel electorophoresis moves DNA through a matrix that contains molecules which prevent large ones from moving but the smaller ones are able to pass through. This allows molecules to be separated by size.</span>
3 inches per year best represents the average rate at which infants grow in height during the first four years after birth. The correct option among all the options that are given in the question is the second option or option "b". The other choices given in the question seems quiet absurd. So by the method of elimination, one can say that option "b" is correct.
<span>The planning and execution of movements is a function performed by the association cortex within the frontal cortical lobe. The frontal lobe in located in front of the brain. The frontal cortical lobe in syndrome of motivation, planning, social behavior.</span>
Speed = distance / time = (420 x 1000) / (6 x 3600) = 19.44 m/s
