What does the prefix "homo-" signify?

The prefix "homo-" signifies "same" or "alike." In medical terminology and other fields, it is used to indicate a similarity or sameness across various contexts. For example, the term "homogeneous" refers to something that has the same or uniform composition throughout, while "homologous" relates to structures that are similar in position or function due to shared ancestry.

The other options represent different concepts. "Similar" refers generally to likeness but not explicitly to sameness, while "mixed" implies a combination of different types, and "dissimilar" clearly denotes a lack of similarity or sameness. Thus, the correct understanding of the prefix "homo-" aligns with it meaning "same or alike."