In an experiment, these should be only one independent variable. It is the one that doesn't change, whereas you manipulate the dependent variable to test your hypothesis.
<em>a gamete carries one allele for a gene.</em>
The answer is B.Normal vision and Vitamin A
Using Red Litmus Paper. Red litmus paper is dipped into a solution to establish whether a substance is acidic or alkaline. In an acidic or neutral solution, red litmus paper remains red. ... When an alkaline compound dissolves in water, it produces hydroxide ions, which cause the solution to become alkaline.
