To test if an organism with a dominant phenotype is heterozygous, the organism is mated to an individual that is heterozygous for the trait in question.
homozygous dominant for the trait in question.
homozygous recessive for the trait in question.
of the same genotype as the organism being tested.

the answer is d p: cell, q: organ, r: organ system, s: tissue

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )