Answer:
Variation occurs in germ cells i.e. sperm and egg, and also in somatic (all other) cells.
Explanation:
A Non-mutagenic factor listed in the options is : ( B ) Drinking water
<h3>Mutagenic factor </h3>
Mutagenic factors are chemical elements or various forms of radiations such as X-rays, UV rays, Sun rays, which may cause a permanent and heritable changes ( mutations ) in the DNA, when exposed to these mutagenic factors.
Hence we can conclude that a Non-mutagenic factor is Drinking water
Learn more about Mutagenic factor : brainly.com/question/1866437
The average mass makes up the weight of the atom that’s why no atomic weights are the same
