If scientists noted that a protozoan developed a cyst, they could safely assume that: the protozoan developed some kind of infection the protozoan was trying to attract a mate the protozoan's living conditions deteriorated the protozoan was protecting itself from invaders

mammal

explanation:

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.