"It was lethal mutation" is the one reason among the following choices given in the question due to which the mouse did not survive. The correct option among all the options that are given in the question is the first option or option "a". I hope that this is the answer that has actually come to your desired help.
The cell wouldn’t be going through the G1 and G2 phase, meaning it wouldn’t be growing so the cell would be underdeveloped and unfit for mitosis.
Rain/water if that's an anwser
The ultimate source is mutation.It is the only way that new alleles and genes are created.
the answer is true ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !! ! ! ! ! ! ! !
