Predict the evolutionary based on their structures

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Agenus is a taxonomic grouping that identifies a collection of species. when a scientist discovers a new species, how is this species assigned to a genus

Which of the following would involve looking at different structures of organisms and comparing how similar they are? a. vestigial structuresb. radiometric datingc. homologous structures