An experiment variable used in certain science teaching
One type of atom, such as hydrogen is called an element. An element is a pure substance, made up of only one type of atom. You can find the elements on the periodic table of elements, where they are listed.
It is heterozygous for that trait.
The only answer that makes any sense is D. The rest of the answers do not make any sense. Be wary of answers that use the word "always." For example, domesticated swine are raised on farms and wild pigs live in the woods. But they are related and would have the similar genetics.
Enzymes called protease breakdown the protein in the stomach
