The main reason that its important to test only one variable at a time is so that

Suppose a scientist measures the amount of dna per cell of a particular diploid species at various stages of meiosis. she finds that the meiotic cells contain 3.7 pg , 7.3 pg , or 14.6 pg of dna. match each stage of the cell cycle to the corresponding amount of dna contained within a cell at that stage.

Matched chromosomes carrying information about the same characteristics in the organism are called

The term facultative anaerobe refers to an organism that