Homologous structures are assumed to: • Have different functions •Have the same evolutionary origin •Have the same function •Have different evolutionary origins

Have the same evolutionary origin

Explanation:

Predicting the evolutionary relationship between organisms require certain structures, which are used as evidence. These structures can either be homologous or analogous.

Homologous structures are those structures of organisms that have a similar embryonic or evolutionary origin i.e. share common ancestors. For example, the wings of a bat and the arm of humans are homologous structures because they are found to be from the same evolutionary origin. Although, they appear different and perform different functions but using genetical means (DNA), they have been found to share a common ancestor.

On the other hand, analogous structures are structures that perform similar functions and are physically similar but they evolved from different evolutionary origins.

this protocol describes a detailed procedure for intracellular flow cytometry staining.

that is wrong, its not thymus.