19. Which of these describes a mutation that can be
inherited?
A
random breakage in a liver cell's DNA
B.
abnormal lung cells produced by toxins in
smoke
C.
a nitrogen base substitution in a gamete cell
D.
ultraviolet radiation damage to skin cells

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

What amino acid is coded for by this sequence after the mutation

A60-tooth gear is connected to a 72-tooth gear.if the smaller gear turns 12 times,how many turns does the larger gear make?