Law in biology is an established principle which is known to be true due to proves
last line of defense is the first part.
and the defense is part of her system immunity. this makes sense since the immune system is used to guard against viruses and diseases
It means to take certain types o the organism that have favorable traits and breed them to keep producing such favorable traits, such as continually breeding fatter chickens or cows, or certain breeds or pure-bred dogs.
Mitosis, as a cell gives two daughter cells with the number of chromosome in daughter cells remaining same as that of parent, hence also known as equational cell division.