Factors that control traits are called what?

The factors that control traits are the alleles. They are determined by two chromosomes which is obtained from the parents. For instance, you are able to roll your tongue, you have two chromosomes one for being able to roll and the other for not being able but since you have that ability you get the allele of being able to roll out your tongue.

The periodic table also has a special name for its vertical columns. Each column is called a group. The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons.

Explanation: