D temperature, it is the one that effects the bacterial growth
The answer is A because the males sperm determines the sex of a baby.The determines sperm is carrying an X or Y chromosome.
B. A model cannot show real life conditions. This is so because models aren't alive.
A point mutation affects a single base and most commonly occurs when one base is substituted or replaced by another. Frameshift mutation results from the addition of one or more bases, known as an insertion, or the removal of one or more bases, known as a deletion.